If you go pendent style you won't have as much of a problem with heat. If you put the mh in a canopy you should put them 10 - 12 (or more) inches above the water and you will need to add fans to move the heat out of the canopy.
Very High Outputs There The Long Bulbs Shown Here Instead of being 40 watts a piece there 110 watts a piece there the bulbs with the red wires connected to them VHOS
Originally posted by SquishyFish
The only two things I would add/change is:
1: Generally on the m/b most will advise you to keep your m/h lights 8 inches off the water (give or take and inch). If there is any problem w/ heat, just put a fan in. Very easy to do.
2. How are Vho's less hassel that m/h?
3. No lids (not sure if they said that)
Squishy
Less heat, no fan required (may be) and cost effective