Help with dwc issues. Seedlings turning yellow

[Wastei]

Not sure what makes u think he dont need cal mag but you do especially with RO water , besides if you add 1 ml per gall calmag it def wont hurt plants but might help,
I would not add h2o2 at all, if you want sterile add uc roots (or make you own search here how to dilute bleach)
Also when bottom leaves start to yellow first its usually calmag def , happened to me a lot and i was using 3 stage filtered tap.
Also chiller is not a bleach/beneficial replacement nor the other way around. i have chiller and water temp is at 65 and still had algae, so combination of both are the best also it is more of preference if sterile is better i dont think u can suggest that.
You DO follow manuf recommendations but at lower dosage like start of wiht 50 % and raise or lower based on how plants react i dotn know anyone in the world who can look at the plants and say hmm i need 2 ml more of bloom.
Also submerged roots need oxygen cuz higher the res temp less oxygene is available , nothing is wrong with using airstones.
So basically only point 1 make sense the rest not really

I know because I've been growing in hydro for many years. Yes Calmag can be used to buffer pH, but only make sense if the nutrient is lacking it in the first place. Is it necessary to be successful in hydro? No.

A complete plant food should have everything needed for plant growth. It's about nutrient mineral ratios, not adding things on top of each other.
Potassium silicate is much more stable and better for cation exchange and pH stability in hydro.

These are grown with a shitty ass air pump and airstones. Jacks321, bleach and silicate. Nothing more is needed IMO.

 

[kratosxxl]

I know because I've been growing in hydro for ages. Yes Calmag can be used to buffer pH, but only if the nutrient is lacking it in the first place. Is it necessary to be successful in hydro? No.

A complete plant food should have everything needed for plant growth. It's about nutrient mineral ratios, not adding things on top of each other.
Potassium silicate is much more stable and better for cation exchange and pH stability in hydro.

These are grown with a shitty ass air pump and airstones. Jacks321, bleach and silicate. Nothing more is needed IMO.
View attachment 4796586
View attachment 4796588

i had amazing grow with just base nutes and calmag , no chiller no AC no humdity control, so yes ur right on that. then same as u ,i added silicate and difference was day and night. Now with pictures , they dont really mean anything cuz everyone's environment is different ,everyone's water is different , everyone's ambient temp and lights are different, so there is no base line on what to give and how much . So for the Calmag what i noticed if mfg has calmag in their entire line then they usually lack of calmag, can be intentional so u need to buy extra bottle i use GH trio and calmag is a must, every time i skip it lower leaves turn yellow and keeps going up until i add calmag, but i agree with nutes u said , u dont even need silica.

 

[kratosxxl]

And since we sharing pics here are mine 14 days from clones

 

[Wastei]

And since we sharing pics here are mine 14 days from clones

Clean looking room! I'm just a little concerned about the roots being tangled with that many plants in the same chamber/reservoir. They don't really like that from my experience.

They are spaced a little to close to each other IMO, you want good aeration and light coverage. I also think about recovering sick or remove affected plants might be hard with roots entangled and plants growing into each other.

But I also like to grow big plants so each to their own I guess lol. Are they soon to be entering flowering or what's the plan?

You have some work to do before that room is fully dialed in tbh but you seem to be heading in the right direction. Cheers mate! Happy growing!

 

[kratosxxl]

Clean looking room! I'm just a little concerned about the roots being tangled with that many plants in the same chamber/reservoir. They don't really like that from my experience.

They are spaced a little to close to each other IMO, you want good aeration and light coverage. I also think about recovering sick or remove affected plants might be hard with roots entangled and plants growing into each other.

But I also like to grow big plants so each to their own I guess lol. Are they soon to be entering flowering or what's the plan?

You have some work to do before that room is fully dialed in tbh but you seem to be heading in the right direction. Cheers mate! Happy growing!

So this is my 3rd in this setup roots do get tangled but i have a lot of air and they do just fine. My approach is to grow staiva dominants so they grow tall but narrow. Spacing def not good but i trim them them so all stems are separate. Will prob get thme to 2 ft then flip prob 1 more week

 

[harrythehat]

Clean looking room! I'm just a little concerned about the roots being tangled with that many plants in the same chamber/reservoir. They don't really like that from my experience.

They are spaced a little to close to each other IMO, you want good aeration and light coverage. I also think about recovering sick or remove affected plants might be hard with roots entangled and plants growing into each other.

But I also like to grow big plants so each to their own I guess lol. Are they soon to be entering flowering or what's the plan?

You have some work to do before that room is fully dialed in tbh but you seem to be heading in the right direction. Cheers mate! Happy growing!

roots being tangled doesnt make any difference to the plants mine only get a sq foot each and have no problems, good plants from the off you dont get no deaths

 

[kratosxxl]

roots being tangled doesnt make any difference to the plants mine only get a sq foot each and have no problems, good plants from the off you dont get no deaths

Thats a nice canopy. R they topped ?

 

[Wastei]

roots being tangled doesnt make any difference to the plants mine only get a sq foot each and have no problems, good plants from the off you dont get no deaths

It works in that setup but I still don't think it's a good idea. I guess there's more of a problem with manual res changes and single buckets. Cheers!

 

[Bushbaby11]

Not much response in the newbies section so I’ll try posting/updating here instead. Hope this is okay?

Everything seemed fine until two days ago. Not sure what’s going on.
9gal distilled 1gal filtered tap
50ml 3% H2O2 added two days ago (should be all gone now)
pH 5.8
ppm 200, gh flora 3part
Res temp 71F
Tent 75F
Rh 40%
Rdwc with waterfall into each bucket
Air stones w/ 3.2Lpm air pump for each bucket
Mars tsw1000 light at 25% 10”
rockwool cubes are famp but not soaked roots touching water, the larger plant has one root poking just past the net pot
Water level 1/2” above bottom of net pots
Nutes are clear, no percipitates at all, but no longer cranberry tinted.

look hungry, feed them girls