Mh Or T5 Or Mix?

[drsquirrel]

I will be building my lights into my own hood, tank will be 40x24x24 - and I will only really be looking at easy to keep corals.


I currently have some (x4) 70w 35w MH ballasts - the ballasts (T5 or MH) seem to be the most expensive part


My ideas are either...
1. 4x 70w MH (enough on their own do you think?)
2. 4x 39w T5 (or 6x)
3. A mix of the two (2x 70w MH + 2x 39w T5 etc etc)

/edit I now have a 150w MH ballast+reflector as well, to add into the mix

4. 1x 150w MH + 2x 39w T5

/edit the 70w ballasts I was given are only 35w although they have 70w MH bulbs in the units. I wasn't intending on using these bulbs, just the ballasts.

Thoughts?