falos;720386 wrote: It essential a DuPont Teflon or silacone coated mat was it the realy slick ones also check to se if it was made in China it could of had high grafite(sp?) Or lead.
Teflon silacone grafite and lead will poison your fish, corals and mobile inverts can take higher levels of these elements with out much damage.
if your gowing to use a mat to quiet pumps look in to food grade mat it looks like the stuff you line cabinets with but non leaching and safe to
I would wait a month at least before adding new fish. Maybe Do a 5gal wc every other day during that time. And if you realy won't to be safe remove your sump, media reactors, pumps and clean them replace all media,floss,bio material if you use it also you can change out the sand bed (suck out 1/6 every 4days git all of it out before adding new
I'm sorry for your fish losses hope every thing works out for you