I run 6x T5s on 2 IC660 Ballasts for 8hrs/day and I liek to change mine around the 9-12 month range.
Overdriving, active cooling and photoperiod are all things to consider when your asking how long lamps last.
Overdriving will cause them to weaken faster, but overdriving and not cooling will burn them out in a matter of months.
Also, Are the new lamps in the back the same as the rest of the lamps? I have some corals that are near the back that look 10x better than the rest of them in my tank and I have attributed that to them being directly under an ATI Blu Plus. Some corals really seem to color up well under that spectrum.
Chris
bad news.. possible black mithrax crab.
hairy legs with that black body is mithrax.
i dont think that he is gonna kill fish. maybe when getting bigger but he is active on acroporas. you can see on acros at nigths mostly on the same acro. you can not notice touching acros in short time, but you acros wont grow.
6-8 months have you tried the special bulb i think its from fauna main
hmmm most of my SPS pieces have crabs in them, but shiny ones who are supposedly good.
I only see this guy in the rock work, never on a SPS coral. for example my anthias used to sleep under a rock, they went missing and one day I found this guy right where they sleep ! same story with my rainbow goby![]()
any cool methods of catching him ? I cant use the glass method, as the current is so high that any food would come out of the cup fast.
okay so changed them all this weekend and WOW !! what a change.
KZ bulbs ROCK !
so got 5 blue, 2 NEW GEN and 1 fiji purple, but the blue looks very smooth ! and not a clue of yellow in the NEW GEN, love them. will post some pics soon.
in matter of 2 days, I think the corals are starting to look better even ! or I see them better.
True perc, I was still getting growth and ... under old bulbs so it wasnt a must, if I didnt want to change to KZ bulbs, I could have held on to these guys for up to 10 months I'm sure. but having a fan to cool the bulbs down is a big plus.