nice pics lorna. Pretty creative to cover the seios.
mine gets blocked all the time with cheato from the fuge and other suff from the water column.
I actually had an anemone vs. powerhead about 6 months ago. It was aweful! I was on the phone as fast I could seeeking advice while I was dismantling the ph. It was a small bta but it never had a chance. It was pretty depressing.
I am still jealous of that candy cane lorna, don't forget about me when it gets too big for teh tank.