Glad I found your channel in a forum. Right on! Thinking about going from Hesi to Masterblend. Now I am re-thinking that 😁

All my love from Thailand 🇨🇷 ❤! I believe in both the importance of knowing where everthing comes from and how it's made. So it's no failure if this lab experience is more expensive. But bluntly, is it cheaper to make for personal use than buying it? It's just for my red lettuce, I don't need tight tolerances or a long shelf life. Just lettuce without e.Coli 😂. -Retired Science Teacher with tons of time.

You are doing such great work, love from India.

@ScienceinHydroponics

3 жыл бұрын

Thank you so much 😀

Thank you so much for you videos and Hydrobuddy ! Using it I've basically been able to use one commercial mix to reproduce another's. ( Will try to get pure base salts in the future when my commercial mixes are up ) It's not exactly the same since the labels could be wrong but the application allows it and the plants seem way happier.

@ScienceinHydroponics

3 жыл бұрын

Thanks for your comment! I'm glad you've found the software and videos useful!

Thank you, Dr. Fernandez! Your videos and blog help me in my hydroponic garden. Yesterday I made an Ripen analog from raw salts. Thanks for your calculator! In this grow I did many mistakes with additives, like Vitamin C, Glucose, shugar etc. Please, talk about good additives for hydroponic in future videos.

@ScienceinHydroponics

3 жыл бұрын

Thanks for commenting! I'm glad you're having a lot of success using HydroBuddy! Additives can be complicated, I will talk about them in a future video.

Very informative video. Thank you for sharing this.

Thanks! I cant get Masterblend or Jacks here in Uruguay and this video saved me!

@ScienceinHydroponics

6 ай бұрын

I'm glad it helped!

Amazing job!

@ScienceinHydroponics

Жыл бұрын

Thank you! Cheers!

Thanks for this video and all your blog posts! I wondering however how you can mix the micros with the phosphates? After reading your blog, I thought that iron and phosphates shouldn't be mixed together.

@ScienceinHydroponics

6 ай бұрын

Thanks for commenting. The pH just needs to be quite acidic and a chelating agent needs to be present.

thanks

@ScienceinHydroponics

3 жыл бұрын

You're welcome!

Thankyou somuch sir for the hydrobuddy❤ very helpful.. can you sir include in hydrobuddy, the substance like disodium edta or tetrasodium edta, sodium benzoate (how much to add when mixing stock solution),

@ScienceinHydroponics

3 жыл бұрын

Thanks for commenting! These substances are not nutrients, so they are therefore not included in HydroBuddy. You can look at these and other video son preparing stock soltuions to get an idea about how much you should add of these substances to stock solutions if you want to use them.

Nice video Dr. Fernandez, I have a question... What if I want to convert the micronutrients solution to x1000 from x100. Do I multiply the weights of the micronutrients chemicals by 10 again including the disodium edta?

@ScienceinHydroponics

3 жыл бұрын

Thanks for commenting. You can do that if you wish, however, note that this solution relies on the acid coming from the MKP to adjust the solution to the proper pH, so a 1:1000 solution that does not have any MKP would require the addition of phosphoric or sulfuric acid to get the pH to proper values (4-5). Add the acid after adding 10x the disodium EDTA.

Hi Dr. Fernandez, as i understand masterblend formula does not care about whether the water is hard or soft as i think it's designed as general purpose nutrient formulation. In your diy formulation what's the typical general npk ratio to offset hardwater or soft. Generally hobbyists i think will not dwell on having their tap water get tested on its mineral content. Thanks and keep posting.

@ScienceinHydroponics

2 жыл бұрын

Thanks for writing! To adjust for hard water is generally not a matter of necessarily adjusting your NPK but adjusting the amount of Ca/Mg/Fe/Zn in the formulation to account for the contributions made by the water. Hard water will also require the addition of acid, depending on which acid you use, you might need to lower your N or P to account for either phosphoric or nitric acid additions. Using sulfuric acid avoids doing such adjustments but you still need to lower the contributions of nutrients that the water is providing. Sadly there is not a rule of thumb for hard water, the degree of alkalinity and chemical analysis need to be used to create a tailored formulation for your particular water source.

Thanks for this video. It has given me the courage to make my own. I have a question about the chelate amount. I'm making some changes to the recipe and wonder what your formula is for deciding how much Disodium EDTA to add?

@HoustonSquid

Жыл бұрын

I think I figured it out, or it is an awesome coincidence. I added up the weights of your formula, and it came out to 18.793g, and you have 1.8g of Disodium EDTA . So, I am guessing that about 10% is enough to get the job done. If I take that same way of thinking for the preservative (Sodium Benzoate), 0.05 is 0.266% of 18.793. If I am way off, please let me know.

@ScienceinHydroponics

Жыл бұрын

The amount of EDTA you should add depends on the molar concentration of Fe, Mn, Zn and Cu. Add all those molar amounts and multiply them to 1.2 to obtain the moles of disodium EDTA you should add. (1.2 to have a 20% excess to ensure everything is chelated) The amount of the preservative per liter is constant, it doesn't depend on the total weight of salts.

@ScienceinHydroponics

Жыл бұрын

This is incorrect. You need to use the moles of the elements you want to chelate to calculate the amount of EDTA.

Thank you for the video. You mentioned the need for conversion adjustment from Iron sulfate anhydrous to Heptahydrate version which is more widely available. I did find a pub med discussion of dehydration by visual color change until more hydrated versions become white from heating as color is stated as indicative of H2O content. It was a discussion of a chemistry student who did not have the appropriate salt for an experiment and was not a hydroponics application. Is this possible with Hydroponics?, Will dehydration work in a pinch without having to convert mol? Regardless I need a solution lol no pun lol. Looking at hydrobuddy I whould have to enter the molar weight in the weights box of all salts individually or just the iron sulfate Heptahydrate?

@ScienceinHydroponics

2 жыл бұрын

Thanks for posting. To convert an amount of Iron Sulfate to an amount of Iron Sulfate Heptahydrate multiply the quantity by 1.83. For example, if you need to add 1g of anhydrous Iron Sulfate you would instead add 1.83g of the Iron Sulfate Heptahydrate. I hope this helps!

@emorycaudill

2 жыл бұрын

@@ScienceinHydroponics Thank you so much for that conversion info and all you do. Side note what nutrients to you see as becoming short supply or increase in price with Russia sanctions, I assume it's mostly soil ammonium based nitrates as opposed to the sulfates and potash imports?

Awesome video! I have a question that has always drove me nuts. Why in hydroponic npk the nitrogen, if it's no3 or nh4 it's counted the same even though the amounts nitrogen are not the same. Also it's counted as it's ALL nitrogen even though it isn't. However, p as in p2o5 and k in k2o are calculated correctly and the O isn't counted. This has bugged me for a very long time. Can you explain this? Thanks in advance btw really liked the how they came up with the tds ppm cool.

@ScienceinHydroponics

3 жыл бұрын

Thanks for writing! I wrote a blog post about this issue a while ago, scienceinhydroponics.com/2020/05/why-do-npk-labels-express-p-and-k-as-oxides.html. Let me know if you have any further questions after reading it!

@ineedcbsi

3 жыл бұрын

@@ScienceinHydroponics cool I'll check it out

Very informative video!!! Just one question Can we use this solution to feed soil plants after 3-4 week(when solution is no longer suitable for hydroponics)? As my main concern with regards to sodium benzoate that it might damage the soil.

@ScienceinHydroponics

2 жыл бұрын

Thanks for commenting. My concern would be that, if it has spoiled, you would be adding a solution that is rich in fungal spores to your soil, I have no idea if these fungi are pathogenic or not, but it is a risk, for either soil or hydroponic grows.

@sam_8a

2 жыл бұрын

@@ScienceinHydroponics Thanks for the reply highly appreciated it. What if the nutrients solution is not contaminated with any bacteria/fungal disease and the solution is just being replaced after 4 week as par of maintenance then is it safe to use in soil garden (This is to save the water and reuse the remaining nutrients)

@ScienceinHydroponics

2 жыл бұрын

@@sam_8a This depends on your soil composition. If your soil is already rich in some nutrients then this application can cause excess of some. However most of the time it should be safe to apply this twice as diluted as you would use in hydroponics when used in soils.

What type of storage jars are you using? Are they good enough to store Ca(NO3)2? Also, if you are from the US, where do you buy the mono-salts/compounds?

@ScienceinHydroponics

3 жыл бұрын

Thanks for commenting. I use airtight plastic containers I bought, they are good enough to store calcium nitrate. You can use mason jars to store Ca nitrate or any airtight plastic/glass container. Avoid using any metal containers to store nitrates though. About where to buy the salts, you can buy most of them at custom hydro nutrients (customhydronutrients.com/)

@MoleGarden

3 жыл бұрын

​@@ScienceinHydroponics Thanks. I used to buy from customhydro and it's a good store, I personally don't like their shipping price. Here is another store that I started to use recently and they have free shipping Check it out mbferts.com/collections/calcium They have all the necessary salt, unfortunately they don't have micro, but in your case you have enough them for the next generation

Great content. Sodium Molybdate is very expensive, however Ammonium molybdate is a tenth of the cost, can a substitution be made.

@ScienceinHydroponics

2 жыл бұрын

Yes, you can certainly substitute it if you wish.

@joncrosby2649

2 жыл бұрын

Thanks for the prompt reply

Thanks for the video. Am in Jamaica and using a Dutch bucket system but I can't buy a master blend. How many gallons of water can I use this mixture in?

@ScienceinHydroponics

3 жыл бұрын

Thanks for writing! The video shows you how to prepare the equivalent of a MasterBlend solution dissolved at 20g/250mL, you can use it in the same way you would use such a solution. How exactly, depends on how you would use a Masterblend to start with.

Masterblend is so expensive now at about 6 USD per pound which is insane. I really want to do some hydroponics but the prices are a bit steep when you add up the three ingredients together PLUS I do peppers, and tomatoes which will drink a lot of it. There has to be something cheaper than 30 dollars for 5 pounds, then 5 pounds of the calcium nitrate is 16, then the Epsom Salt at around 8 for six pounds.

@ScienceinHydroponics

2 жыл бұрын

Thanks for commenting. The truth is that fertilizers right now are really expensive, especially at low quantities. If you want to get good prices, you need to buy at least 50 pound bags of each.

@generalawareness101

2 жыл бұрын

@@ScienceinHydroponics Which would last me for well over 50 years.

EDTA tetrasodico subiria mucho el PH? por esono lo usan?

@ScienceinHydroponics

Жыл бұрын

En las cantidades utilizadas el efecto en el pH no es muy importante.

Could I use EDTA Tetrasodic? I cant find Disodic :C

@ScienceinHydroponics

6 ай бұрын

Yes, but you will just have a bit more sodium.

Que tan dificil es replicar una marca reconocida como por ejemplo advanced nutrientes o athena? usando sales se puede lograr el mismo producto con la misma calidad? Gracias Daniel!!

@ScienceinHydroponics

Жыл бұрын

Si claro, puedes replicar cualquier formulación. Sin embargo es necesario hacer analisis de laboratorio para replicarlas, ya que la composición que ponen en la etiqueta no es realmente lo que hay en el producto.

what is the adjustment as i have iron sulfate heptahydrate?

@ScienceinHydroponics

2 жыл бұрын

You need to add around 1.8x the amount. You can use the ratio between the molar mass of both compounds to find a more precise adjustment.

Do the stock solutions need to be ph balanced?

@ScienceinHydroponics

Жыл бұрын

No, they will mostly be acidic. This is required for their stability.