TomTheWicked
New member
I have a pair of Kessil a360w's mounted about 6" off the water on an 11.5hr photoperiod at 50% intensity (Recently switched to 35%).
I'm beginning to believe this may be too much light? Either intensity or duration. The tank is about 9 months old and I've fought hair algae almost from the beginning (still a work in progress), but I've also had mixed success with corals.
My acans were placed about mid-tank and they've slowly gotten worse, there colors have slowly gotten less vibrant, and they're beginning to recede. One of the plugs fell below some rock (and I left it there) and it seems to be doing much better (in the shade?)
Hammer and Frogspawn seem to be good about half way up the tank but haven't really seemed gown that much since I've owned them.
Caulastrea were placed about 3/4 from the bottom and are doing great (from 2 to ~11 heads in 9 months).
Duncans are about 2/5ths from the bottom and were doing great at 50% intensity, but now (at 25%) don't open fully.
Green ricordia about 3" from the bottom hadn't done much of anything until some algea grew over it (again, shade?) and it's finally opening and swaying in the current.
Had a nice colony of Zoas on the bottom that looked to have melted away.
In the tank, I have two O. Clowns and a Purple Stripe Dottyback.
SG 1.024
dKH 10
pH 8.1
PO4 - 0 ppm (probably because of the algae growth)
NO3 - 0 ppm
NO2 - <5 ppm
So, I guess my question is; I know others have these lights on 40B's and likely don't have these same issues. What are your settings for your lights?
Thoughts and or suggestions appreciated :wavehand:
I'm beginning to believe this may be too much light? Either intensity or duration. The tank is about 9 months old and I've fought hair algae almost from the beginning (still a work in progress), but I've also had mixed success with corals.
My acans were placed about mid-tank and they've slowly gotten worse, there colors have slowly gotten less vibrant, and they're beginning to recede. One of the plugs fell below some rock (and I left it there) and it seems to be doing much better (in the shade?)
Hammer and Frogspawn seem to be good about half way up the tank but haven't really seemed gown that much since I've owned them.
Caulastrea were placed about 3/4 from the bottom and are doing great (from 2 to ~11 heads in 9 months).
Duncans are about 2/5ths from the bottom and were doing great at 50% intensity, but now (at 25%) don't open fully.
Green ricordia about 3" from the bottom hadn't done much of anything until some algea grew over it (again, shade?) and it's finally opening and swaying in the current.
Had a nice colony of Zoas on the bottom that looked to have melted away.
In the tank, I have two O. Clowns and a Purple Stripe Dottyback.
SG 1.024
dKH 10
pH 8.1
PO4 - 0 ppm (probably because of the algae growth)
NO3 - 0 ppm
NO2 - <5 ppm
So, I guess my question is; I know others have these lights on 40B's and likely don't have these same issues. What are your settings for your lights?
Thoughts and or suggestions appreciated :wavehand:
