Nitrogen def or nutrient overburn, please take a look - LOTS OF PICS!

Okay i do DWC as well and H202 is fine to add it kills all the good bacteria of aqua shield. It is not bad just ads more oxygen to the water so H202 will not damage your plant. I also use sensi grow/bloom A+B. your ph should be about 5.5. i run my PM 5.5 to 6.1 and then drop it. As soon as i see my ph hit 6.1 i check res see if it needs a top up or clean out. If i top up i make sure to drop ph to 5.5 again i normally clean my res every week. i to about 2 top ups.
Now the questions that need to be answered in order to help you

Miracle grow where are u using this?
What kind of light at what distance?
temp of your Res?


Also since u are using RO water i would add calmag+ or something like that, very common DEF in RO water

in hydro young plants need a lower ph to allow for uptake of needed nutes 5.4-5.6 for seedlings and veg. 6.0-6.2 is perfect for last 3 weeks of flower when they need the nutes that uptake at those levels.

Attachment 2195606
this shows the ph for hydro and soil and i recommend 5.5 run till 6.1 and add calmag+ since u are using RO that should clear up your problem and make sure to keep your rest 68 ish

Originally Posted by mikmike

Miracle grow where are u using this?
What kind of light at what distance?
temp of your Res?

Its Miracle Gro singles (24-8-16) - I use this stuff with my tomato plants, they love it. So since it high in N, I added one packet to the reservoir.
Also I never mix H2O2 with Aquashield, don't get me wrong, haha . Only added it when leaves started drooping, thought that its a lack of oxygen.

The light I'm using is 400W MH air cooled by a custom system I made. It's located 20" above the tallest plant.

Regarding the water temp it is currently at 68 degrees. The reservoir is constantly receiving cold air from the AC tunnel I build behind it. - Pic related.

108_0861.jpg

I also keep pH at 5.6-5.8 rate but again if these plants need N the pH should be kept at around 6.0 .

the do not need N. U need Calmag+ u are using RO water and that is common def in RO water TRUST ME been there done that. If u are giving them N and it is not getting better then it is NOT N def.

EDIT: drop to 5.5 u get Cal and Mag, since ph is 6.0 u are not getting those nuts..... GET calmag + and u will be happy and she will be happy and use threw out the grow since u are using RO water

Originally Posted by mikmike

Attachment 2195606
this shows the ph for hydro and soil and i recommend 5.5 run till 6.1 and add calmag+ since u are using RO that should clear up your problem and make sure to keep your rest 68 ish

Yeah they have this stuff in my local hydroponic store from Botanicare. Question is, Sensi Grow A+B already contains calcium+ magnesium + iron, why add extra?

Originally Posted by mikmike

the do not need N. U need Calmag+ u are using RO water and that is common def in RO water TRUST ME been there done that. If u are giving them N and it is not getting better then it is NOT N def.

EDIT: drop to 5.5 u get Cal and Mag, since ph is 6.0 u are not getting those nuts..... GET calmag + and u will be happy and she will be happy and use threw out the grow since u are using RO water

Aight, I will go get some now . How much do you think I should add for a 11 gallons of RO?

Miracle grow for hydro? You cant use soil ferts in hydro.