I have 4 48" T5HO bulbs. My total lighting period is 8 hours, but my lighting period with all 4 bulbs on is 5 hours. I turn the rear two on at 2pm and the front two on at 3:30pm. The rear two turn off at 8:30pm and the front two turn off at 10pm. I might change this a bit, but this is what I'm running now.Clayton,
Thanks that is VERY helpful. I might invest in the pH controller for my Apex after all!
One question: How long is your lighting period?
Interesting, I like your method to monitor pH without controlling CO2 to ensure an even injection of CO2 each day. That said, you are running 8 hour photo period. I am using the season table on the apex. It is giving me about 10 hours of light (2x 65W Power Compact). I am moving to an LED fixture today. Hopefully I wont have too long of a photo period.
Yeah, go slow. And don't freak out when you go past when your drop checker is bright yellow (that's why I eventually just took mine out.) When you get the max CO2 that you can possiby get into tank without stressing fish, then you can see what photoperiod works best for you. Are you dosing EI? If so, with max CO2, you should use light as your limiting factor for plant growth and algae.Yeah that is what I am doing for my CO2. Might be worth it.
That said, just tested my pH. After CO2 being on for 7 hours, my pH is at 6.4.
Before CO2 comes on my pH is 6.8. Clearly I need to up the CO2 a tad more.
I have no problem increasing slowly, less stress on the fish.
Thanks again for the input!