lollipopman
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So I found this on the mag but it doesn't seem right. Seems like to much nutrients for one liter of mix. Can someone tell me the right amount of grams for each to make a liter.
it does sound good,i would guess 250 ppm with my r/o water and real hammerheadI took the hammerhead I made put 6ml in a gallon, starting ppm was 210 finale with the hammerhead 510 does that sound right @sixstring
I think that's the hammerhead 9/18 second version of it. Mine is the first 0/9/18.The recipes I've seen call for 69 grams monopotassium phosphate, 91 grams potasium sulfate to 840 grams distilled water.
i forgot to post back on this.but i did measure the real hammerhead i have 6 mls per gal clean water comes out 260ppm or .5ec thats the 0-9-18 stuff.peaceit does sound good,i would guess 250 ppm with my r/o water and real hammerhead
I dunno how Mulray came up with those weights(107MKP,68 K2SO4, 4 MgSO4), but when added to water and brought to one liter final volume they do not equal 0-9-18. More like 0-5.5-7, N-P2O5-K2O percent weight/volume.
To make a solution that has 0-9-18, N-P2O5-K2O percent weight/weight. It would take 191 grams MKP and 257 grams of potassium sulfate in one liter final volume. This exceeds the maximum solubility of potassium sulfate alone by a good bit, so in the mixed solution I would expect a good bit of undissolved salt.
To make a liter of the 2-4-10, N-P2O5-K2O percent by weight/weight. It takes 85 grams MKP, 163 grams KNO3, 19 grams K2SO4 and 141 grams epsom salt in one liter final volume, this also gives 1.25% Mg and 1.9% SO4 (combined sulfur). This formula is actually feasible.
Awesome info MrBlah,
I am very novice when it comes to mixing my own salts. Do you have any suggestions where I could get started learning more about formulating my own fertilizer? Additionally, I have read that combining some salts together will create a non beneficial reaction, is this correct?
Thank you
Nice site! I’ve been working with salts and Jacks. Hoping to replicate the results I was getting with House & Garden aqua flakes, Big bud and the MOAB/HammerHead combo at the end. I'm getting closer since I ditched 3-2-1 and started using the nutrient calculator.Formulating your own fertilizer is not something that is easy to learn. I don't know of any resources online that will teach you very well. There's a lot of resources that talk about the individual nutrients, but not much for what is needed and how to get it. First, you need to know chemistry. Then you need to understand the fertilizer industry. Then you have to know a lot on horticulture. If you want to skip the formulating your own and copy others, then you don't need to know much on horticulture. I wish it were easy.
You are correct that combining some fertilizers together will create a precipitate. The important thing to know here is that concentration is important. It ONLY happens at high concentrations that are typically found in stock solutions like the liquid blends you buy from the store. At the low concentrations that your plants feed at, it is not something to worry about. I've written a little about this here: . You'll also find a fertilizer compatibility chart.
Thank you MrBlah! That is a very helpful link, that is an awesome site. My goal is to find new ways I can tune the fertilizer to suit my needs. For example, a ratio of elements that will reduce or encourage stretch, (lack of nitrogen or phos?) a mixture that will encourage root growth during cloning, a high phos ratio? Additionally, a "bloom booster" such as hammerhead or 13/14. I would love to be able to make my own variations and fine tune the plants diet. I feel I lack the required chemistry tools to be able to do this well. I guess I should start with an in-organic chemistry class?
Thank you