I just bought two 250W metal hatile bulbs for my 30 gallon tank, is that to much for my tank? and how much electricty does it use? will it run up my electicty bill?
Dual 250's on a 30 gallon will cause major heat problems and is really unnesecesary. A single 250 will work but you'll need to keep the heat issue in check. Watts are watts no matter what they are supplying so your electricity bill will rise.
What are you looking to keep? Heat will be an issue in that small of a tank with MH so you will need some good airflow and or you could go with a pendant MH setup. What's the dimesions of you tank?
