Could stare at it for hours 
No not so you'd notice as there is enough room for me to squeeze the syphon hose behind the back and sides and also the two back compartments. This is how I do My water changes I blow and syphon from these areas and not from inside the tank as such. I then replenish new water into the aquarium proper. Seems to be working fine thus far.
Yeah I think I got a real steal there with those. I fed mine for the first time this evening with frozen brineshrimp they took it and closed up but the tentacles were open again in a matter of minutes, must be greedy little buggers.
The tank dimensions are standard UK aquarium size (L x W x D)
Fleabay member zoanthid-exotica
/www.zoaid.com/index.php?module=Gall...p;g2_itemId=271Yeah, the tank looked much the same colouration so I needed a different coral to that give a different effect, There was no yellow in the tank so I was originally trying to get hold of a Sun Coral, to no avail, then some of these Sand Polyps came up on Fleabay, needless to say I won, I got them for £12 which was a good buy considering the effect they have on the overall picture within the tank. Looks like they are a fast spreading species though.
It's my favourite. Wasn't sure about buying it at first (could I keep one of those I thought) Its a funny thing I positioned it sorta where I wanted it and it seems to have moved slightly or adjusted itself. Saw its sweeper tentacles out yesterday evening.
Yeah there are lots of them now, they really do extend as far out as the original size of the frag (75mm) Notice it tends to dull slightly in its flourescent quantity when the sweepers are out.
