OK, you can laugh at me as your reading this but I just had a realization. I can't get my plants to grow because I have 2 filters in my tank with carbon in them!! They are doing better with the tabs but they're not growing, just not dying! So here's my question...the carbon helps keep the water clean for my fish. If I take the carbon out, what do I put in it's place? Also I'm going to be getting a Fluval canister filter in the next 2 weeks, what do you suggest I use as media in that? Here's the link if you want to check it out. http://www.drsfostersmith.com/Product/Prod_Display.cfm?pcatid=14633&N=2004+22777+2146962594 Either the 205 or 305..not sure if I should get the bigger one in hopes of a bigger tank down the road.