MH causing bubbles

[fatcats]

ive had my 2 150 MH on my tank but i havent used them( also came with some t5) but now that i have corals i turned them on and they it looked like my tank was covered in bubbles when i came home. Whats up with that? Also whats a good way to cut back on diatoms?
Thanks

 

[cherylann]

Your MH are not causing the bubbles, they are however contributing to the diatom problem you have. The diatoms trap micro bubbles, the problem you need to solve is getting rid of the diatoms. Consider how much you feed, do u have phosphates in your water and at what level. How long are your lights on? And do you have enough flow? What stage is your tank in, if it is a new set up diatoms are to be expected, but if it has been set up for awhile you also need to consider your filtration. Gotta love the hobbie