5 Gallon DWC problem after recent res change.

I'm running multiple 5 gallon buckets atm, changed 5/9 buckets (4 had already been changed the other night because of different issues). Out of these 5, after the res changes 3 of them have started wilting, the other 2 are just fine.

While changing res, did a cleaning of the buckets with a bleach solution, made sure to thoroughly rinse with hot water for quite a long time. Boiled airstones, and cleaned the tubing with hot water. Did H2O2 baths on roots of all 5 (Been having root problems on the other 4, with less established rootballs, Brown slime cyanobacteria which I finally managed to rid from my system) 10ml of 29% in 4 gallons of water. Rinsed roots thoroughly with coldish water after. Added less than 3ml/gal of Hygrozyme to all res's. all were fed the same amount of nutrient solution.

Just rechanged the res's on those 3 not 20 minutes ago, added nutrients, with no hygrozyme this time, PH at 5.6. Also added Heisenberg's EWC Tea to the res's after this change, which had been brewing for 48 hours. Will see what happens in the morning with this. IF this doesn't change, i'll probably end up dumping the res's on those again, and trying with 1/4 strength nutes unless someone has a better idea.

This is just one of the wilted plants Root ball is tan, stained from the nutes I assume. There's no slime, and other than this, it's been growing bigger buds every day.

And for comparison, this is one of the plants that isn't wilting.

Flowering Time: 28 days
Room Temperature: 72f
Air Pump: 8 Outlet active auqa + 1 outlet active auqa. 1 Large Cylindrical airstone in each (Have heard these have most air output)
Lighting: 1000w HPS
Res Temps: ~63-68
RH: varying between 45-50%
Nutrients: Earth Juice Sugar Peak Flowering - N2%P4%K5% (This is their line specifically meant for hydro or soil, no clumpiness or anything)
PH: 5.4-5.8 varying between buckets. Not a recirculating system. Have noticed that the PH will sometimes spike up to 6.1-6.3 within a couple hours. May try to not use full strength on these ones.
Don't have EC/TDS meter yet.
No light leaks in the res's (While they are the orange home depot buckets, they've been duct taped with black tape with 3 layers, no spots missing, 0 leak through this) Lids are black lids with already built in unremovable netpot. Hydroton balls as medium

bumpity to the top

Looks like u solved ur issue. Get an ec meter asap

yeah that would help. u did some recovery but it doesnt look like nutes have messed u over. make sure nothing fell in buckets and no leaves in root ball. i have a leaf throw off my ph crazy. a couple times it seemed to move by itself.... ur leaves are green and from what u've typed u should be good. bubbles look great. the yellowing is prob from budding so man...maybe the qtr strength is too weak. u dont have ugly yellowing(yellowing before budding which is pretty normal) or rust looking leaves at all. i guess id say check root balls and ph... hope it helps

So, 1/3 of those got hygrozyme again when I changed out the res, the other 2 didn't. When I went back in, the 2 without hygrozyme were completely fine again, while the one with was still wilted, actually worse. Rechanged that res with just nutes (3/4 str to let it recover a bit), so hopefully she'll recover. Definitely going to get an EC/TDS in the next day or so though, and try to get these PH issues solved. The EWC tea may have also helped a bit from what it looks like.

Would organic nutes cause PH fluctuations of almost 1 every 5 to 10 hours? Earth Juice Sugar peak says to not let it get above 6.8 on the bottle.. but yeah

ive never done it but i hear yeah it can and will. i was in a hydro shop and i guy mention trying it in a res. the root turned color and the ph changed pretty fast and dramatically. think about what the base should be(i think) poop lol. soil adds a good buffer as my soil looks good with the poop. that water prob makes it fester and the bubbles help it live too prob with the other tons of micro-buggers having a party. i guess some dont play nice though...

Seems that maybe it isn't the hygrozyme (Not fully sure yet) but this one plant still hasn't recovered and is wilting a ton (though the branches are wilting less, all the leaves are still very wilted).

Rechanging the res at this moment with less water in the res, 1/4 str nutes and some bennies in it, ph'd to 5.5. Letting the root ball get some more oxygen at the moment too (Though I had 2 airstones in the one last night to see if that would help the problem. Thinking too much water in the res may have made it so it wasn't getting enough dissolved oxygen. Hoping this one can recover as it's a pretty good sized plant 4 weeks into flower, though recovery time will definitely make it take a bit longer if it does..

Will update tomorrow if it does start to recover.. Hoping to find out what's causing this so it doesn't happen again. However, I did manage to get the PH more stable in the other ones after getting an EC/TDS and with some bennies to help break down more of the nutes.

So, that plant is now dead. Added hygrozyme again as a last resort to kind of test if it was or wasn't that, and it does seem to be that is what killed it.