Guide to Nutrient Deficiency or Toxicity

great info!

I'm growing in a RDWC (recycling deep water culture) I have rust spots that turn brown and than dry up. I've tryed flushing,lowering my nutrients,changed PH ratio, and still can't solve the problem,don't know what else to try,any other suggestions?

Originally Posted by palerider1

I'm growing in a RDWC (recycling deep water culture) I have rust spots that turn brown and than dry up. I've tryed flushing,lowering my nutrients,changed PH ratio, and still can't solve the problem,don't know what else to try,any other suggestions?

where are the brown spots? unless the death is on the edge of the leaf (signifying nute burn), then your spots are either bugs or UNDER feeding your plants. and flushing, lowering nutes will never help, in fact it will get worse.

if your in soil, staying at 6.8 is the most important thing. 5.8 for hydro (and your RDWC setup). never veer from this. ever.


post up some pics so we can see whats going on.

This is my first grow Im using a DWC system with GH 3 part recently switched to the Lucas formula its not too bad just yet but wanna catch it before it gets worse. How should I be mixing my nutes (calculated for 3 gallons) to fix this problem that seems to be a Potassium deficiency?mj2.jpgmj3.jpgmj4.jpgmj1.jpg

that was very helpfull TY

i have a sulfur problem how do i help it? do i flush? do i give it more nutes? whats the deal

how do i change this ??????? im in flowering need help asap

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Originally Posted by moneytalks420

how do i change this ??????? im in flowering need help asap

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up the micro nutes. check your bottles of nutrients and see which has sulfur and use more of it.

i stick to the bottles from petstores for fish tanks, tropical plants, 0-0-0 NPK, 15+ micro nutes, usually 6 bucks. been using that for years as an additive and its rare for me to have anything wierd going on