Alright, been juggling around with reservoir temps so far I can keep temps in 64, but once the ice runs out it jumps up to about 80. I got a rotation happening now where I can rotate frozen bottles so it's constantly cool, the highest the temps reach when cooling is 69. Is that adequate having a range from 64-69? 64 mostly happens at night though, grow room temps range in the high 70's. As long as I keep the res chilled grow room temps don't really matter, I mean not insanely hot (like 90's) Also for Hygrozyme, I've been using it and I have seen nothing but brown algae produced from it; but that was prior to chilling the res. Is it worth trying Hygrozyme since I can manage the temps in the reservoir now? I think the brown algae was the combination of the temp and hygrozyme feeding the algae. Also will I notice an increase in growth speed, since I now have the res temps dialed in properly? will Ph be more stable as well? BTW Res temps before chilling was around 80f
I would stop using any additive that isn't fertilizer if you can maintain a res temp in the 60's. At some point bite the bullet and get a chiller IMO. You won't notice any speed up in growth if you have the other parts of your act together (light, soup and aeration). However, the biggest difference I noticed when I started using a chiller was that the potency went up.