I have bought a lot of those bulbs off ebay and they work great. only issue is they don't seem to like the moisture and only last around 6 months for me. but they sure do the trick. how many watts? oh and that's why I always run a separate pump for my toys as it steals a lot of flow from the return. I also find its harder to dial in your overflow when feeding other things
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150 gallon reef mostly softies/lps. 50 gal sump with bubble magnus skimmer/ Led fuge light/refugium/ 1200 return and tunze powerheads. Dual pharoah main tank led.4 pump dosser.
550 gallon stingray tank water drip system
150 bowfront. 75 turtle tank, many others
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