Gph For 20 Long.
- Thread starter CBBP
- Start date
Mr Miagi
Veins are flowing with SW, now going back to FW!
15-20 times turnover is pretty good general figure thrown around for marine. So a 300gph or 400gph powerhead. Perhaps two smaller powerheads to create a different flow pattern, ie 3 x 100gph or 2 x 150gph powerheads. 
Mr Miagi
Veins are flowing with SW, now going back to FW!
Lighting isnt really measured by WPG in marine Reefs. In a 20g id think youd be after 2 or 4xT5s or a MH (metal halide). Standard globes which come with most tanks wont do for hard corals.
Do you mean SPS or LPS? SPS stands for small polyped stony coral, and are things like Montipora and Acropora, whereas LPS stands for Large Polyped Stony Coral, which includes your frogspawns, hammer corals, and Elegance coral. They (LPS) generally require less light than SPS.
Edit: With SPS, the hard corals your probably looking to also increase flow in gph. The 15-20x turover was a genaral figure for mixed reefs/nanos.
SPS/Hard corals are tough beginner corals, Id recomend getting good lighting, like the before mentioned T5's, but starting off with some less demanding corals such as LPS (Hammer corals, elegance corals, frogspawns etc.), Leather corals, and soft corals like mushrooms and zoos. Not unless your confident you can keep water quality tip top, and water stats such as Calcium, Alkalinity and pH stable in a small nano.
Do you mean SPS or LPS? SPS stands for small polyped stony coral, and are things like Montipora and Acropora, whereas LPS stands for Large Polyped Stony Coral, which includes your frogspawns, hammer corals, and Elegance coral. They (LPS) generally require less light than SPS.
Edit: With SPS, the hard corals your probably looking to also increase flow in gph. The 15-20x turover was a genaral figure for mixed reefs/nanos.
SPS/Hard corals are tough beginner corals, Id recomend getting good lighting, like the before mentioned T5's, but starting off with some less demanding corals such as LPS (Hammer corals, elegance corals, frogspawns etc.), Leather corals, and soft corals like mushrooms and zoos. Not unless your confident you can keep water quality tip top, and water stats such as Calcium, Alkalinity and pH stable in a small nano.
Nope, incandescents are the wrong light spectrum. THey mimic water less than 5' deep. Not too many coral reefs exhist in water that shallow 
. Most higher powered saltwater lighting outputs white and blue spectrum light which is what corals actually see at their depth on the reef.
What us the diameter of these tubes? 1", bigger, or smaller? T8 stands for 8 8ths of an inch. T5 stands for 5/8ths of an inch. T12 stands for 12/8ths of an inch. Smaller diameter bulbs pack more power and are better for stony corals. You can do some easier LPS under 2 T5 tubes spanning the tnak length but if you want SPS you'll want 4-6 T5s spanning the tank length
. Most higher powered saltwater lighting outputs white and blue spectrum light which is what corals actually see at their depth on the reef.What us the diameter of these tubes? 1", bigger, or smaller? T8 stands for 8 8ths of an inch. T5 stands for 5/8ths of an inch. T12 stands for 12/8ths of an inch. Smaller diameter bulbs pack more power and are better for stony corals. You can do some easier LPS under 2 T5 tubes spanning the tnak length but if you want SPS you'll want 4-6 T5s spanning the tank length
US or UK?
For fish only sure, but not for corals, those mini compact lights have a like 2-4000k rating on them that corals will not appreciate.
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