Would two 175MH be good enough for 100gal?
- Thread starter dragonboy
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russianspy
Member
That would be aminium for soft corals, would go for 250 watts to make those corals happy and if u ver want a clam or SPS
russianspy
Member
I would go for the 250 w MH lights to make those corals happy..Lots of spelling errors
russianspy
Member
What are you going to hold? Softies? If so ya, thats fine, but if your going SPS or Clams 250W MH i woud go with
zanemoseley
Active Member
What are the dimensions of the 100? What corals are you gonna want to have. Also you can run some fans to help with heat.
zanemoseley
Active Member
I'd run 3X250w MH's. Actually with a tank that deep I'd almost be tempted to run 400w MH's if you want to have high light acropora's.
neotrin17
Member
My 2 - 250's and 2 110 actinics are hung 12 inches above the tank. To be truthful it is a hood system with the UV glass. I dont get any heat on the tank actually. I have two fans built into the system and I haven't had any heat issues. It stays at a constant 78-80 degrees...mind you I dont ever see my heater come on...so I am sure the lights are keeping it at this temp. Then say 18-26 inches you can do 250's. If you don't plan on keeping clams or a lot of hards then the 250's are fine. You can still have them they will just need to placed high in the aquarium. I would send you a pic of how mine is set up...but my cam is on loan to a friend. I will try and get one soon though.
dburr
Active Member
When I had a 100 gallon I had 2 175's on it. 
And I had SPS and clams
Of corse it was 60"X22"X18".
DO NOT GO BY WPG. It will mislead you. Go by your height. 24" and over I would go with the 250's. Only 2 at that. MH will cover 24" to 30" area. If you put that 3rd MH in the center, you will end up with a nice shadow of it in the middle of your tank.
My .02, Dan
And I had SPS and clams
DO NOT GO BY WPG. It will mislead you. Go by your height. 24" and over I would go with the 250's. Only 2 at that. MH will cover 24" to 30" area. If you put that 3rd MH in the center, you will end up with a nice shadow of it in the middle of your tank.
My .02, Dan
X
xoxox
Guest
I've heard of studies coming out that it isn't just the wattage but also the reflectors. Having good mirror reflector angles means more light to the bottom.
E
eaglefan
Guest
I have 2 x 175 mh and 4 x110 vho on my 110 and everyone loves it. Everything is growing a a nice even pace
K
kistheeze
Guest
Originally posted by RussianSpy
That would be aminium for soft corals, would go for 250 watts to make those corals happy and if u ver want a clam or SPS
I have 2X175W MH and 2X55W PC and have clams and SPS.
24" tank with 2" sandbed.
What's your basis for stating that it would be a minimum for soft corals?
russianspy
Member
MY basis for it being a minimum for soft coral....Well it wouldn't be a minium but a good amount, but i waws saying if he wanted SPS he'd probly want 250W MH....The more light the beter your corals grow and live....I think and a 100 gallon tank is deeper and wider than a 24" in tank...I think, you really didn't provide specs..So i would go with 250 MH lights....IMO