i guess if your that anal about everything. theres tons of stuff you need to worry about then. lol. Buy a R/O unit and only use that water. just waste your old tank water. it just evaporates anyway and rains back to us.If you dont use natural fish meds. then maybe you have something to worry about. plus your carbon in your filter should remove the meds. plus its not stagnant water and is being filtered at least 4 times in one hour. and there is living fish in it. o my. lol. Unless its maybe goldfish or koi. i dont wanna argue. if you dont agree then just state your opinion and dont say everyone is giving you bad advise.

What in my filter? You use carbon? Nice! BTW, Carbon is only to keep your tank from smelling like $h1+! I actually gravel vacume out the fish waste and maintain perfectly clean smelling tanks WITHOUT USING CARBON!
If you don't agree, just state your oppinion and gag like a maggott! Oh, or just use Carbon and the heck with waste removal!


