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I haven't used anything organic in the media. I'm worried about drawing gnats or other bugs. I will look into bumping the P though.

No I just use it from the bag. It's Promix HPCC, peat with chunk coir. It has PH buffers and mycorrhizae in it I think. Using Cocos A and B with CalMag. N-P2O5-K2O is 7-3-10 and ppm is 100-21-132. It's actually done a pretty good job, I was just wondering if there's anything I could do to make...

LOL, I had P on my mind. Knowing that phosphorus plays a part in root growth I was wondering if increased P in a mother plant would be helpful. I found the article and didn't catch that higher K was what was being suggested. Okay, so 2-1-2 fert would be close to 1:1 N/K ppm and 100 PPM N (I'm...

Here's another NPK question. Is it correct to assume when articles are talking about fertilizer NPK ratios that they are talking about the guaranteed analysis or ppm ratio? For instance, I'm reading that mother plants are best grown with elevated P and lower N. " Cuttings taken from the new...

I'll be using a Maxigro/bloom mix like you suggested and doing similar with the Lucas. Silica supposedly has various benefits including root protection so I want to run it in the culture. I can do with/without and see what the effect is. Running DWC, never had any problems with 900 ppm, but I...

Maxi Series Recirculating schedule, mid bloom I weighed out 1.5 tsp which is what's in the schedule and got 10.5g along with the full schedule is 182-201-420 If using 6g Maxibloom and the full schedule NPK is 123-123-282 Very high either way. I'll be running Maxigro/bloom with some Si topping...

I've figured it out! I was looking at the N and Ca relationship on the bag of Maxibloom. They're both 5% by weight. When I put in 1 g/gallon in the calc it indicates 13ppm of both N and Ca. Then it hit me. My mistake was to think ppm was referencing atoms per million atoms. That's why I was...

It doesn't make any difference in the calculator. 5% nitrate or 4.5% nitrate and .5% ammoniacal both yield 100 ppm at 7.5g/gallon Okay, so those are the values. I'd like to understand how they happen, because if I apply the elemental weight of P (44% of P2O5) and K (83% of K2O) to 5-15-14 I...

Thank you. I know that. I'm just theorizing on what it would take to achieve a 1:1:2 ratio (which is what some people seem to suggest for flowering). Whether it's worth doing is another matter. The Maxibloom schedule does list a PK booster, FWIW. As far as my math, punching in the NPK values...

Ahh I see, thanks. I started out using Maxibloom then switched to a Micro/bloom lucas formula. Switched from hydro to soil and am now switching back to hydro. Would like to keep things simple with a dry fert but I do have an interest in understanding and playing around with NPK ratios. Nothing...

Why do you agree? Part of the reason I started this post was to learn. What do you think of my Maxibloom analysis? The initial numbers aren't PPMs, just ratios by elemental weight. I then applied the atomic mass of N to the N ratio (100) and came up with a factor of 1.61 to increase that number...

I'm thinking I could use dry Koolbloom or monopotassium phosphate as a PK booster and get the NPK ppm ratio very close to 1:1:2

My math for P was off. These should be valid PPMs possible with Maxibloom N 100 P 65 K 145 Ca 40 Mg 27

It is a little above my head but I'm trying to learn. Assuming equal atomic mass and using the actual ratios in Maxibloom not rounding off (5:6.6:11.62 ) Maxibloom powder can produce a solution like this: N 100 P 132 K 232 Ca 100 Mg 70 But PPM values would need to be adjusted based on the...

Using P205 and K20 multipliers with Maxibloom powder (5-15-14) the NPK ratio is 5:6.6:11.62 or approximately 6:7:12 (1:1:2) With Calcium at 5% and Mg at 3.5% it seems like it's pretty close to the 4:2:1 ratio. Seems like a pretty good dry fertilizer solution. Any Maxibloom detractors? Why go...

I'm sure not above your skills, just need to understand the multipliers. Ammoniacal nitrogen breaks down to 34% nitrate nitrogen. P2O5 is 44% phosphorus and K2O is 83% potassium. Well, not going to contest that there's a lot of snake oil out there but after doing some looking around it seems...

Taking another look at the Floranova, .25% ammoniacal nitrogen * .34 is .085 3.75% nitrate nitrogen Total is 3.835% nitrate nitrogen 8% P2O5 * .4364 Total is 3.49% phosphorus 7% K20 * .83 Total is 5.81% potassium For a NPK ratio of 3.835:3.49:5.81, same as 79:69:115 Now it's making sense...

There is some miscommunication I think, but not mixing ratios as you are suggesting. I understand that NPK listed on the bottles is molecular weight, but I've been assuming when talking about NPK ratios that molecular weight was being used. Seems like it would be easier to have elemental...

I ran DWC for several years and never had anything more than minor issues. Then one day some particular strain of bacteria or fungi made it's way into my solution and it was hell after that. It's just a matter of the right microbe that is bad for roots and can thrive at low temps getting in the...

That's not true. I started having root rot issues when I was using a chiller keeping water temps at 65F. Root rot and other pathogens can thrive at 65 no problem.