AC50 or AC70 29 gallon - The Planted Tank Forum
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post #1 of 19 (permalink) Old 05-01-2013, 07:13 AM Thread Starter
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AC50 or AC70 29 gallon

I have a 29 gallon planted tank. Right now I am between a ac50 and an ac70. I have a couple of endlers and some shrimp and one gourami. I don't want heavy flow, but need to make sure the tank stays clean. I have a small biosponge rated for 10gallons I think. and a top fin 20.. both seem to be doing an okay job right now. but obviously it isn't enough.

$30 for the 50
$40 for the 70

Thoughts?
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post #2 of 19 (permalink) Old 05-01-2013, 07:17 AM
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Honestly, I'd go and get an AC110, but an AC70 with a prefilter sponge is more than adequate for a 29G. It'll keep your tank water pristine. Make sure to keep your current filters when you add the new filter. You don't want your tank going into a mini cycle from removing too much beneficial bacteria. Also, I would ditch the carbon pack it comes with and get a purigen bag. Works so much better as a water polisher and doesn't foul as quickly as carbon.

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post #3 of 19 (permalink) Old 05-01-2013, 07:17 AM
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AC50 or AC70 29 gallon

I use AC 50's on my 20 gallon grow out tanks. Work great, not too much ow but just right. I have an AC 70 on a 40B and it would be way too much for a 29.
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post #4 of 19 (permalink) Old 05-01-2013, 07:19 AM
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Quote:
Originally Posted by Cardinal's Keeper View Post
I use AC 50's on my 20 gallon grow out tanks. Work great, not too much ow but just right. I have an AC 70 on a 40B and it would be way too much for a 29.
I had an AC110 filter on a 10G with an AC50 powerhead. I'm sure an AC70 on a 29G wouldn't be too much especially if you have a prefilter sponge on it.

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post #5 of 19 (permalink) Old 05-01-2013, 11:35 AM
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before I went cannister, I had an ac50 on my 29gal. it worked so well, I had a hard time justifying the switch to cannister!
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post #6 of 19 (permalink) Old 05-01-2013, 11:49 AM
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I had 2 AC50s on a 29 works well
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post #7 of 19 (permalink) Old 05-01-2013, 12:38 PM
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I'd go with the AC70. If you think it's too much you can turn the flow down.
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post #8 of 19 (permalink) Old 05-01-2013, 02:45 PM
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I'd go with the AC70 for the additional space for media. If the flow is too much, you can pick up an AC50 impeller for cheap.

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post #9 of 19 (permalink) Old 05-01-2013, 03:27 PM
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Tank Filtration

Quote:
Originally Posted by zarich View Post
I have a 29 gallon planted tank. Right now I am between a ac50 and an ac70. I have a couple of endlers and some shrimp and one gourami. I don't want heavy flow, but need to make sure the tank stays clean. I have a small biosponge rated for 10gallons I think. and a top fin 20.. both seem to be doing an okay job right now. but obviously it isn't enough.

$30 for the 50
$40 for the 70

Thoughts?
Hello z...

A Hagen AC50 is plenty for a 29 G tank. All you need is a filter with a gallon per hour rating 4 times the volume of your tank, so a 120 gph filter is fine. Your AC50 has a gph of 200, so there's extra filtration.

Just follow a sound, weekly water change routine and you don't need to over filter your tank.

B

"Fear not my child, just change the tank water."
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post #10 of 19 (permalink) Old 05-01-2013, 05:14 PM Thread Starter
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So why do people say 8-10x?
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post #11 of 19 (permalink) Old 05-01-2013, 07:17 PM
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I would go bigger. You can always dial it back and restrict flow if it's too much. You can't go the other way (very much).
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post #12 of 19 (permalink) Old 05-01-2013, 08:11 PM
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Tank Filtration

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Originally Posted by zarich View Post
So why do people say 8-10x?
Hello again z...

Not sure. Maybe they think putting a lot of filtration in the tank will keep the water clean, but only large, weekly water changes can do that. Maybe they want to double up on the filtration in case one quits, but my filters have run for years with no problems.

A lot of people over filter their tanks and that's fine, I guess. Maybe, they have "deep pockets". My pockets are pretty shallow, so I get by with the basics.

Just guessing, though.

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post #13 of 19 (permalink) Old 05-01-2013, 09:43 PM
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I got an AC70 for my 18g tank. No heavy flow on low setting and I use a prefilter. I think an AC110 would be great for 29g.

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post #14 of 19 (permalink) Old 05-02-2013, 12:28 AM
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It's called an AC50 because it's rated for tanks up to 50 gallons. Hagen recommends 20 to 50 gallon tanks. I don't disagree wit the suggestion to use the AC70 since a nominal increase in cost gives you flexibility in the future. My old AC50 ran 24/7 for 7 years until I gave away the whole setup. You can expect the little sucker to run forever so you might as well give yourself the ability to move it to another tank.

AC110 is nuts. That would be 500 gal/hr. Cost about $65 which is a lot more than $30.
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post #15 of 19 (permalink) Old 05-02-2013, 06:34 AM
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Quote:
Originally Posted by WheeledGoat View Post
before I went cannister, I had an ac50 on my 29gal. it worked so well, I had a hard time justifying the switch to cannister!
I am in the same boat. Deciding between ac50 or eheim classi 2215 canister for my 29g
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