This past weekend i was at a family party and i was talking to my uncle about my 75g tank. I brought up lighting and how i want to upgrade to halides and how expensive it would be. To my suprise my uncle said "i think i have a halide light in my garage if u want it just stop by my house and dig it out from the back of my garage and its yours" Of course i jumped all of that and went directly to his house after the party. What i found made me the happiest person alive. I 400W halide ballast, complete with fixture and bulb. The only thing i need to do is make a reflector out of alluminum flashing and hang it above my tank. I would buy a reflector off line, but its an older fixture and its a little bit big so idk if a new reflector will fit.
Now for my questions. Its going on a 75g tank and it will be hung from the ceiling above the tank. How much temperature increase should i expect and am i going to need a chiller or can i get away without one. Also i am thinking about ordering a 250W bulb because i think the 400 is a little overkill for what i need it for.(not planning on doing hard corals or clams) Will the difference in wattage from a 400 to a 250 make a huge difference in temp or should i just get the 400W.
Now for my questions. Its going on a 75g tank and it will be hung from the ceiling above the tank. How much temperature increase should i expect and am i going to need a chiller or can i get away without one. Also i am thinking about ordering a 250W bulb because i think the 400 is a little overkill for what i need it for.(not planning on doing hard corals or clams) Will the difference in wattage from a 400 to a 250 make a huge difference in temp or should i just get the 400W.