Thanks everybody for all your help (and the distraction from work)! One question I'm still stuck with - how important is it to have a TDS meter? I understand that it measures the total dissolved solids in a solution and thus tells me how much other stuff will be in the water in addition to the H2O, though it doesn't tell me what that other stuff is, only that it's there. However, is it sufficient to have the API test kits for ammonia, nitrite, nitrate, GH, & KH?
Thanks!
Thanks!