Oh, and in terms of heating problems, I used the heater provided in the 55G Topfin kit. I also have a 29G Topfin kit with a smaller heater.
So I removed the heater supplied in the 55G topfin kit. I replaced it with the heater from my 29G Topfin kit. Much smaller. My temp is always between 78F to 80F. I have thermometers on each side of my 4-ft tank.
I am happy to say that I have a successful reef starter setup with PC
lighting, cheap HOB
filters, and an All-Glass glass top. I learned something in this hobby and that is to K
.I.S.S. so that you don't have to deal with so much fluctuations.
I actually used to have much more problems with my water with the top open, for some reason. But when I placed the glass on, increased my powerheads, bought more testers and monitored my water over the course of a few months, I actually learned that my water has been very stable. The heat is much more stable as well. I actually have a feeling based on experience that the glass top does not cause a green house effect.
Good luck to you all. Don't worry about my setup. I must just be a lucky one who has a less-than-$700 setup (total equipment and tank) with a glass top.
Lights = $260
Topfin Tank kit = $225
Prizm Skimmer = $60
Extra Whisper HOB
Three powerheads = $70
Powercenter Timer = $20
All Glass Top = $30
I'm just lucky I guess. Don't try the glass top at home!