SPS coloration question

[polarbear]

I think I'm going to try moving the SPS frags lower in the tank. I'm new to running MH lights on my big tank and I'm the one that figured all of my SPS needed to be towards the top so that they got enough light. Ill move them and see how they do. Thanks for all of the advice.

[allan]

Todd had one of the most insane SPS tanks I have ever seen. Huge growth and spectacular colors. He used MH and the VHOs which I believe he swore by.

But his temperature was dead on. Used a chiller.

I'd recommend a fan and a controller or a chiller to keep your temp stable.

[allan]

I think I'm going to try moving the SPS frags lower in the tank. I'm new to running MH lights on my big tank and I'm the one that figured all of my SPS needed to be towards the top so that they got enough light. Ill move them and see how they do. Thanks for all of the advice.

Dude, I didn't read that post in time. If you recently went through a change in lighting, I'd definitely start off lower in the tank. My red planet looked radically different if I had it too high in the MH tank, whereas with the T5 I had to keep it a bit higher to get it to look good. With LED it looks like somewhere in the middle is the ticket. I don't recommend chasing anything rapidly, but for the health of the coral I think it's common practice to always start lower and move higher as necessary.

[polarbear]

I know. That was stupid on my part. I just have one SPS that's causing problems. I'm going to move that one as well as some others lower in the tank.

As for using a fan to cool the tank. Does it need to be in the canopy blowing across the water or will it work the same if I have it blowing over the water in the refugium?

[allan]

I've used it in my sump and worked well. When I ran mh I used a big one over the top of my tank, worked very well.


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[Big_Pun]

you need to transfer heat out of the canopy keep it circulated. I think we talked about that at one time that about canopy and MH. I love my halides don't get me wrong but in a canopy they are tricky. that's why I run a fixture and open top.

[polarbear]

Ill try one over the refugium to see where the temp stays at. I have a canopy but its open across the back and has holes that someone cut out of both sides. If the fan doesn't work over the refugium then ill by a clip on one to put in the canopy

[BSJF]

Can you post a pic of the problem? Could be as simple as you have more new growth than you are used to. However, with the recent change in light, you could have converted to rapidly.

[KING]

Just get a chiller..theres a few up for sale.. I got a 400w over my 30x30 cube..so i slaped one on.. And now my temperature stays at 78 degrees has a little bit of evaporation so I put an ATO a few days ago..good luck