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I've looked through many posts but when I find recipes, containing rock phosphate and/or cottonseed, it's usually in parts. I can figure the ratio of ingredients but the fertilizer to water ratio eludes me. Should I be using a cup or Tbsp? The ingredients I have are: Cottonseed meal, rock...

phatkix I've seen that you promote rock phosphate usage; do you top dress or make tea with it? If you make tea can you give your recipe.

quick question: How much of Cottonseed meal and Rock phosphate would you add to a gallon of water; for a tea?

I had a suspicion I was underfeeding, but I guess better under than over. Thank you NotMine. +rep for the help.

I've been going with Fish emulsion (5-1-1) and kelp (.1-0-1) double dose. So (5.2-1-3) I was thinking Phos also so I topped dressed with bone meal (0-5-0). Maybe it's to slow acting. Not sure? Suggestions for Phos. source?

hoping someone could give some insight into my problem. Any ideas with the black spots?

the bottom ones; are they the six holes I see in the floor? Maybe they are not large enough. I run something similar, and have no issue with heat. It runs about 2 degrees higher than ambient. cab: 24"x16"x36" 400w mh 2 4" intake fans (lg case fans) 1 outlet 220 cfm pulling through diy cool tube

just curious. How does the air get in and out of the cab. Are there vents above the fans. It seems they are contained inside the cab when the doors are closed. Are there intake ports somewhere? I don't see any on the bottom.

same for the black necrotic spots?

bump... any ideas are much appreciated

I think you're being to quick to judge. Give them some more time... They'll fatten up. What's the strain? Looks sativa'ish... Otherwise looks good.

Hey guys/gals just wanted to get your opinion... I'm using R/O water, ph is 6.6 - 6.8, with organic nutes (Fish/kelp/bone). Been veggin 7 weeks. My thoughts: Bonemeal is slow release so they are suffering a phosphorus diff??? Root Bound? Going to re-pot soon.

Quick question: how much greensand would you use to top dress? Been using fish emulsion and kelp for veg. Just dressed with bone meal in prep for bloom. Wanted to use GS for Potassium.

Hard water? Know ppm for water? I'm going to also suggest checking Ph. Good Luck

you can check here... Nutrients PH Problems On Marijuana Plants Spots Symptoms That Appear kinda looks like maybe phosphorus deficiency. I don't think it's mg I believe the tips would be curling up. Could also be a ph issue. Do you check your ph on a regular basis? Just thoughts. Hope it helps

And I meant to quote Unity. Sorry

Yes I read the whole thing; I didn't want him to flush his plants with the water that is causing the problem.

Seems always the response but not always the problem. Had the same thing happen fought it for a long time till I tested the water. Ph here is about 7.6 Get the water straightened out and things will be better.

Quick questions for you: Did you fertilized them? Tap Water or RO/Distilled? Know Ph? Soil contain nutrients?

hoove let us know how it turns out. Make sure you use a good fan and ducting. It'll make a huge difference.