i have silca sand - I was wondering because of the white sand it was making the water seem cloudier?
a few pieces of shist stone and afew small pieces of dead coral.
I change 40 litres of water every week (sometimes fortnightly)
Have only just clean the filter out last week for the first time - and that was pretty clean so just gave a quick rinse through some tank water
I feed - tetra cichlid jumbo sticks (says will not cloud water), small pieces of prawn / fish this usually gets eaten all up or uneaten gets removed, bloodworms
I have also changed the way I do my waterchanges, which seems to be helping alittle. I first mix the required salt in a bucket of water, then water straight from the water change system we have and slowly add the salted water.
The puffers don't seemed to be worried at all with the cloudly water though.