Switched to flowering this week (Nov. 1) and of course drained, cleaned and refilled the reservoir buckets with the flowering nutrient solution.
Cleaning this week indicated more growth on the interior surfaces than normal so I also did a full H2O2 (3%) clean, with a good rinse afterwards. Also ran the air stone in a cleaning cycle for a few minutes.
You can see that the discoloration from last week is gone, thankfully.
Keeping the pH in check though I did let it slip with a few days in between readings there. Thankfully no substantial effect.
I'm not sure I love the overall geometry of the plant... but it's healthy and has a decent number of colas forming so that's all that counts.
Compared to the chilled and recirculated water system I used last time around, this is MUCH easier. My reservoir temps are a bit higher than I'd like but the Hydroguard is doing it's job and no issues so far. Fingers crossed it stays this way.
Thanks for reading growmieverse.