is 150 watt MH too much for blastos...?

[flipteg]

my aquarium is a 30 gallon cube that is 21 inches high... there is a 150 watt HQI metal halide sitting about 6 inches from the water surface... i was wondering if this is too much light for blastomussas if they are on the sand in direct line of sight from the light...

i also have a perfect place for them (in terms of aquascape and viewing) which is partially under an overhanging rock... a lot of the MH light is still reaching the coral... i would say about 90% compared to if the coral is just sitting in the open sand...

i just bought the coral 2 days ago, and it is not really fluffing up like it did in the store... i'm not sure if it's the light but earlier tonight, i placed it in a really shaded part of the tank... i will see tomorrow if it does better... the only problem with this location is that it's only viewable from the side... i'd rather have it in my selected location but i just want to make sure that it's not getting too much light before i put it back...

so basically, i'm not sure if it's not opening up because it's getting too much light or because it is just getting used to the tank...

 

[xdusty6920]

the 150w mh will work fine for blastos. i have 4-5 colonys closer then that to my 250wmh's. acclimation is key though. slow drip acclimating the blastos. then put them in a low shaded area of the tank and slowly start to move them up the rockwork to where you want them. ive had blastos for a while and i find that they can adapt and do well under many conditions (not just low light low flow), but they need to be bought to those conditions very slowly to prevent stress.

 

[gitsumpottery]

I have a 150w over a 12" tank and my blastos are doing great.

Zac

 

[Rendos]

Should be no problem. I have a 250 HQI over my 45 cube and the blastos are growing like crazy.