Those stream type powerheads can & will kill sea hares so make sure they're covered. Any powerheads can suck up an unsuspecting sea hare but the Tunze & Seios are so high powered, they're even more of threat.

the lawnmower blennie is a film algae eater, won't make any difference in the hair alage at all.

Steve

I actually have a 20gal with lots of hair algae growth. I put this growth into my FOWLR tank.My fox face rabbit fish and my blueface angel will clean a rock in about 2 hours. The rabbit loves all types of algae whereas the lawnmower in the same tank would prefer for me to feed it:biggrin: .

With your tank being so new and if you don't have many corals yet you might consider cutting back on your lighting period (if you haven't already). You didn't say whether your live rock was cured or not when you got it. A number of articles I've read suggest slowly raising your lighting period on new tanks from 4 to 10 hours over 6-8 weeks.

The rock I got was 'supposably' curred according to my vendor, however with the delay in shipment I did expect a considerable amount of die-off. The lighting cycle started a week after receiving the LR, followed by MH's a week after that with a short 3-4 hour photo period. After I started with aggressive water changes in the 3rd week I increased the photo period to about 7 hours. So basically for the last 3 weeks my MH's have been on a 7 hour schedule.