MH and HPS

Damn I meant flower not veg in the post two above. I've been growing with a 600W HPS, has worked well but the bulb is getting old. I'm torn between getting two new 600W HPS in a 4' long cooling tube or a new 600W HPS with a 400W MH in a Growzilla (enclosed reflector 21"x21", exhausted). What would be the different benefits of either setup, or what do you think of either option. My friend thinks the two 600W is the way to go. Thanks

THC.Ocean said:

I'm debating on whether to grow outside or inside. One question I have though, with space out of mind, how many plants can fit under a single 400watt HPS and a single 400watt MH bulb? My plan is to use one MH bulb during veg and then one HPS bulb for budding.

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I have fitted 25 vegging plants that won't exceed 1 ft and about 5 mothers in 5 gallon pots before. Do you have space restrictions? Mine is a 4 by 8 area.