I am having an issue I don't understand. In short the things in my 240 under the Hamilton Cebu sun lights are not doing well.
They were doing excellent for a while and then just went down hill. Growth stopped, browning and lack of polyp extension on all my gorgs.
So I re-lamped replacing the MH and T-5 bulbs with new ones. That was 2 months ago. It didn't help. I moved the lights gradually down to 6 inches over the tank. That helped a little.
I took one of the sad looking gorgonians and moved it into my 75 gallon tank under the Reefbreeders Photon and in an hour
it was much better. I moved another and the same thing happened. The 2 tanks are on the same sump with the same water parameters.
My large purple ribbon that I thought was going to die already has it's polyps out right now and is purple again.
The other thing I noticed is in a short period of time I had Hamilton 10k, 14k and 20k bulbs in the fixture. When I installed the new Hamilton 14K bulbs one was defective so I put a 20K until it was replaced. To my eyes they all have the same appearance and it is a very bright white. This was not the case before.
So I installed 4 new Ushio 20k bulbs and put the 4 new Hamilton 14ks in the cabinet for later. They replaced the defective bulb.
Could it be something with the 4 ballasts? I have checked and all 4 are set to 250 watts.
I am stumped.
They were doing excellent for a while and then just went down hill. Growth stopped, browning and lack of polyp extension on all my gorgs.
So I re-lamped replacing the MH and T-5 bulbs with new ones. That was 2 months ago. It didn't help. I moved the lights gradually down to 6 inches over the tank. That helped a little.
I took one of the sad looking gorgonians and moved it into my 75 gallon tank under the Reefbreeders Photon and in an hour
it was much better. I moved another and the same thing happened. The 2 tanks are on the same sump with the same water parameters.
My large purple ribbon that I thought was going to die already has it's polyps out right now and is purple again.
The other thing I noticed is in a short period of time I had Hamilton 10k, 14k and 20k bulbs in the fixture. When I installed the new Hamilton 14K bulbs one was defective so I put a 20K until it was replaced. To my eyes they all have the same appearance and it is a very bright white. This was not the case before.
So I installed 4 new Ushio 20k bulbs and put the 4 new Hamilton 14ks in the cabinet for later. They replaced the defective bulb.
Could it be something with the 4 ballasts? I have checked and all 4 are set to 250 watts.
I am stumped.
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