Comments on: Creating Flow in the Reef Tank https://gmacreef.com/creating-flow-reef-tank/ Reef Aquarium Plumbing & Design Fri, 21 Sep 2018 00:49:13 +0000 hourly 1 https://wordpress.org/?v=6.8.12 By: gmacreef https://gmacreef.com/creating-flow-reef-tank/#comment-2311 Thu, 08 Mar 2018 04:06:17 +0000 http://gmacreef.com/?p=598#comment-2311 In reply to Petr.

I no longer have the tank, but I only ever ran the MP40 on “Reef Crest Mode”. This is where it ramps between 10% to 100% then back down again, over the course of about 45 seconds or so. The other pump, the Koralia, was mounted above it. That pump was pointing in the same direction. Having both pumps pointing in the same direction created a Gyre (circular flow) in the cube.

Very little detritus collected under the rocks with the pumps set up this way. In a bare bottom setup this is a good indicator that you have ample flow in the tank.

I don’t think the CP-25 is necessarily oversized for a 30 cube.

]]> By: Petr https://gmacreef.com/creating-flow-reef-tank/#comment-2303 Wed, 07 Mar 2018 05:48:49 +0000 http://gmacreef.com/?p=598#comment-2303 In reply to gmacreef.

Well the lowest setting is for Jebao CP-25 says everywhere over 6 thousands L/h so still too much for me I guess. I bet you keep Koralia at dead spot and what intensity you have your MP40 then?

]]> By: gmacreef https://gmacreef.com/creating-flow-reef-tank/#comment-2292 Sun, 04 Mar 2018 04:14:52 +0000 http://gmacreef.com/?p=598#comment-2292 In reply to Petr.

With my 55 gal cube I ran an MP40 and a Hydor Koralia Evo 1500. Cubes are easy to create good flow patterns.

The flow ratings on powerheads and in-tank pumps can be hard to compare. There doesn’t seem to be any standard for measuring amongst the manufacturers.

The cross flow pumps look interesting, I may be picking one up soon. The CP-25 might be a good choice for your tank. With controllable pumps you can always turn them way down if they are oversized for your tank.

]]> By: Petr https://gmacreef.com/creating-flow-reef-tank/#comment-2117 Mon, 22 Jan 2018 00:38:06 +0000 http://gmacreef.com/?p=598#comment-2117 hi..regarding the flow inside the tank I have read somewhere it should be up to 20 times of the water volume. My tank is a small cube 50cm x 50 x 50 what is about 120L (30 gallons??)
I am thinking to buy 2x Jebao sw-4 cause they have a controller. I somewhere read cross flow is much better but probably tricky in a cube tank. Anyway the smallest cross flow pump is again Jebao cp-25 but technicall data shows it has a flow of 12000L so even the smallest is far too strong unless some writing error.
So my question is what should I go for in my cube tank and what would be its placement like???

Thanks a lot for your help if somebody already had this issue

]]> By: mightymo https://gmacreef.com/creating-flow-reef-tank/#comment-806 Thu, 06 Aug 2015 02:39:00 +0000 http://gmacreef.com/?p=598#comment-806 Nice write up. Very informative information.

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