NICE TANK!!! Really like the rock work. Those big pebbles have to be a HUGE pain to clean though! In my 150 gallon I have pebbles about half that size and they are a PIA to clean.
i find it easier to clean these bigger pebbles than the smaller ones.i hoover the bottom weekly on water change, and fortnightly take them out and scrub them in old tank water. there are no pebbles under the rocks which makes it easier to remove them. i got the idea from a friend who always has loads of fry survive due to them being able to hide in the larger pebbles.
sweet