They are strong enough to suck an anemone in, but they wouldn't chew the nem up like a powerhead. Would probably suck him in and spit him out the end. Not lethal, but still not ideal. Plus, the nems tend to go straight for them and want to be right in the direct path so that increases the chances of a mishap. Now in the 265 I have 4 nems who have stayed put and have stayed away from the tunzes thus far (knock on wood).
Angela
More pics soon. I did get the aquamedic bulbs in. I am thinking I may be doing myself an injustice with the lighting upgrades as some of the best nems I have seen were under PC's, VHO's, etc. I like the long stringy look and in an 11" tank getting blasted with overdriven t5's I may not get that. Although, I have seen nice anemones under MH's too...Probably over thinking it.