questions about canister filters

salotti5150 · 08-28-2007, 08:57 PM

Right now I have a 20g planted tank with some platys, shirmp and snails in it. I've been using a hob filter with keeps the water clean but the filter just seems to get dirty pretty fast so I was looking into getting a canister filter. The filter I was looking into was the Fluval 105. But for $10 more I coulld get the 205. What I was wondering is if the Fluval 205 with it's 110 gph flow rate would be too much for my tank. I don't want my fish swimming for their life all the time. Also I read someones post that said they didn't use carbon in their canister filter since they had a planted tank. Is carbon bad for planted tanks? Or was it just a personal choice. Thanks, anthony

Clerk · 08-28-2007, 11:31 PM

It would not be to much, I have a 204 on one of my 20's, its not to much flow at all

Carbon isn't particularly bad for plants, but it will take iron out of the water. Which some plants benefit from.

emc7 · 08-28-2007, 11:44 PM

110gph on a twenty is only a 5.5 turnover. Its actually on the low end of recommend flow.

Sowilu · 08-29-2007, 06:17 AM

I think the bigger the better.

I have a fluval 304 on my 29g and it does an excelent job cleaning. My water is more clear than when I had a HOB.

08-28-2007, 08:57 PM	#1
salotti5150 Junior Member Join Date: Jan 2006 Location: san diego Age: 32 Posts: 5	questions about canister filters Right now I have a 20g planted tank with some platys, shirmp and snails in it. I've been using a hob filter with keeps the water clean but the filter just seems to get dirty pretty fast so I was looking into getting a canister filter. The filter I was looking into was the Fluval 105. But for $10 more I coulld get the 205. What I was wondering is if the Fluval 205 with it's 110 gph flow rate would be too much for my tank. I don't want my fish swimming for their life all the time. Also I read someones post that said they didn't use carbon in their canister filter since they had a planted tank. Is carbon bad for planted tanks? Or was it just a personal choice. Thanks, anthony

08-28-2007, 11:31 PM	#2
Clerk Senior Member Join Date: Nov 2006 Location: Oregon Posts: 466	It would not be to much, I have a 204 on one of my 20's, its not to much flow at all Carbon isn't particularly bad for plants, but it will take iron out of the water. Which some plants benefit from. __________________ Four Tanks 55 Gallon - Planted Display Tank 50 Gallon Community 20 Gallon - High-Light Planted Breeder 29 Gallon - Newt

08-29-2007, 06:17 AM	#4
Sowilu ┼{§}Nena{§}┼ Join Date: Jul 2007 Location: NC Age: 19 Posts: 308	I think the bigger the better. I have a fluval 304 on my 29g and it does an excelent job cleaning. My water is more clear than when I had a HOB. __________________ Fish:1 betta, 5 zebra danios, 4 cories, 3 long fin danios, 2 neon tetras, an apple snail, and 2 C shrimps. Plants: 1 Java Fern, 4 vallisneria, java moss

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08-28-2007, 11:44 PM	#3
emc7 Senior Member Join Date: Jul 2005 Location: Johns Creek, GA Posts: 3,304	110gph on a twenty is only a 5.5 turnover. Its actually on the low end of recommend flow.

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