This is my first hydro run, thought I'd do DWC since it's cheap and easy... The strain is Serious Seeds White Russian, feminised and grown from seed. Started in rapid rooters and then on into the DWC. The reservoirs are (3) 14 gallon rubbermaid tubs filled to 8 gallons (RO water), with 2 plants in each res. Started them on 55w pl-l flouros, vegged for 20 days using GH nutes and lucas formula at 0-5-10 (have had a Mg def problem at that strength). We're at day 8 of 12/12 and nutes are at 0-8-16 (after changing out the reservoirs) and they're under an aircooled 600w hps. pH at about 5.7, ppm's around 1200 and res temps around 69-72 F with light on. They've shown some serious growth and tons of white roots... So here's the issue: I've been using Dutch Master Zone after mistaking hydroton residue in the res for algae, but it never hurts to have it in as a preventative... On day 6 for whatever reason I decided to throw in 1 oz./gal of 3% H202 in each 8 gallon res. My dumbass didn't dilute it before pouring it in the reservoirs and immediately all plants started drooping badly, leaves and stems. They got better overnight except for one of them, and the rest still have signs of stress with kinda droopy, claw-like leaves. Yesterday I changed the res with the bad looking plant and added only superthrive and left it overnight...brought ppm's up to around 400 this morning. There hasn't been any change in any of the plants since yesterday. Any suggestions on what to do would be appreciated.