my local petshop has ripped all there tanks down & have set up a complete new system with 2 frag tanks as their centre peice. anyway the water has been added & i asked him are you using cured LR as then you could buy roughly 40KG & put 20KG in each sump they are about 400ltr Tanks each back to back all their equip is tmc, so most of it is crap v2 800 skimmers that kind of rubbish rio pumps sump full of sponge nitrate filter i said he recons no but i no he's lazy & doesn't clean out properly so yes. so i say why are you adding uncured rock to a 30 grand new system, the owners don't no anything about the marine side & believe the guy that runs that part of the shop. this kid sold me over 10 fish in the last 2yr that he said were reef compat yet i bought a batfish got home read up & i was ****ing furious with him. so to the question i asked why uncured rock & his reply was well i spoke to a marine biologist & he told me to use uncured LR you no the stuff with all the nasties aiptasia the normal stuff you get on uncured LR. so i ask you should i say anything to the owners or keep my mouth shut & watch this fool run it to the ground, a bit like he did to the old system. the reason i ask is over the years i'v got to no the owners & they are as good as gold but i'm unsure of how to persue as i don't want him to end up skint thru a dick that knows nothing running new systems into the ground.:reading: