Long overdue an update really, been busy...
Well I had a few problems with Co2. UP atomizer kept stopping, so I'd open up the needle valve some more and it would get going again. I'd get it set just right only to find it had stopped again an hour or two later
One of those problems that drive you mad, hunched in cabinet with gritted teeth trying to figure it out! Tried a new UP and problem seemed fixed, but then the next day the same thing happened! Stripped down and reassembled regulator increased working pressure to 8bar!! Still was not working
....
Ended up being a fault with the steel check valve! Binned it. I now just have the regulator connected to the UP with nothing in between (I can't see the point of a bubble counter as the bubbles are too fast to count!).
Anyway this problem had been going on for about a week, I though everything was fine but then a few day after various plants started to melt a bit, lower leaves going transparent etc... and a bronze coating (diatom) crept on everything! Arghhh!! I dropped the LED (TMC grobeam 600s) output to 20% (from 60%) sorted the Co2 etc. The melt has stopped but I still have the bronze dust on leaves hard scape. I never get any algae apart from diatoms. I wish I had something else, nice green threads perhaps, this brown gunk is so annoying! Why always diatoms?...................
I hope I have things in check now. This low light is fine, but the growth is a bit slow really, I'd like to speed the whole thing up with megawatts of powerful light, but am too scared
So i'll play it safe for now.