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Unread 05/17/2019, 11:47 PM   #1
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Join Date: Oct 2004
Location: Slovakia
Posts: 44
Algae filter

Hi guys,
I'm going to build up my own algae (chaetomorpha) filter. I'm going to use MR1 reactor and 30W led grow light.
The only question is what flow is needed to go thru. How strong pump I do need?

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Unread 05/23/2019, 07:44 PM   #2
David MC Lee
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Join Date: Aug 2001
Location: South of Springfield IL.
Posts: 1,645
I have had (chaetomorpha) filters in sumps with tons of flow and in small seperate tanks fed by just a small powerhead and had great growth. That said I also use a 250W MH lamp. I could typically get a trash bag full in a couple weeks from just a handful. Every time I tried some other small bulb I never had much growth. That's my experience.

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Unread 05/25/2019, 05:21 AM   #3
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Join Date: Jan 2015
Location: Fremont, CA
Posts: 9,555
For my coral tank, I'm right now setting up a large Chaetomorpha fuge (44 gallon Brute) and plan on using a Kessil H380 Halo II as light.
On the fuge compartment of my haddoni biotope tank, I'm using a PAR 38 grow LED bulb and the Chaetomorpha there grows quite well.

As for the flow, you need enough to keep the Chaetomorpha ball afloat and rotating so that all sides get light and nutrients. And you want to have enough water throughput to make an impact on the main tank. I try to have the entire main tank volume pass through the fuge at least once per hour.

Pairs: 4 percula, 3 P. kauderni, 3 D. excisus, 1 ea of P. diacanthus, S. splendidus, C. altivelis O. rosenblatti, D. janssi, S. yasha & a Gramma loreto trio
3 P. diacanthus. 2 C. starcki

Current Tank Info: 200 gal 4 tank system (40x28x24 + 40B + 40B sump tank + 20g refugium) + 30x18x18 mixed reef + 20g East Pacific biotop + 20g FW +...
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