DerrickH
New member
Grim, have a question for you. I was running 2 x 10,000k T5HO bulbs and 2 x 460nm actinics(36" 39w) on my 40g tank. I pulled the canopy off to do some cleaning and broke one of my 10k bulbs. Went to a LFS and bought a Power Glo 18,000k bulbs. Moved the tank and to another room in the process and then installed the 18k bulb. Im seeing hair algae pop up here and there. The 18k and one actinic are on one fixture that comes on at 7am and shuts off at 9pm. The other fixture has a 10k and actinic that comes on at 9am and runs till 6:30pm. You think my algae is due to the 18,000 bulb? Im running through a mini cycle but before when it was completely cycled I had 2 10k and never ended up with hair algae. Phosphates are around .10. Running phosban and carbon right now to get them trimmed to 0. Also temps were very high but a chiller fixed that. Im leaning towards ditching the 18,000k bulb and getting another 10,000k instead. Whats your oppinion? The 10k/actinics are about 3 months old. The 18,000k is new.