Fluval Spec V Filter output Mod - The Planted Tank Forum
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post #1 of 17 (permalink) Old 01-16-2017, 09:55 PM Thread Starter
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Fluval Spec V Filter output Mod

I recently set up 2 planted Fluval Spec V's for housing a single Betta or some shrimp...I haven't decided yet. After fighting with heaters for a couple of days and then reading how to put some small holes into the pump output tube, I finally got my temps stabilized. Then came the small problem of pump output. The output is incredibly strong for a Betta or small shrimp. I tried putting some Fluval pre-filter sponges on the output, but that didn't satisfy me as I quickly built up some proteins on the water surface. It also made my temps drop suggesting that my flow had changed in the pump housing. It did indeed slow the filtration down. I tried placing a small piece of coarse foam into the nozzles and that worked until they became even slightly clogged. Frustrated I started digging around in my filter scrap boxes. Eureka! I found something that would work for me. I used to breed shrimp and was a huge fan of cheap foam filters until I discovered the Hamburg Mattenfilter. I tore apart one of my old filters to find the part I needed. This fits perfectly over the end of the filter tube coming out of the pump output to the tank without any modifications. Just remove the swivel output part and replace it with the part indicated in the photo's. The opening is large so it will not spray water straight into the air. I turned my pump all the way up as well to see if it would hit the ceiling...but it didn't. It sounds like a waterfall but I like that...some of you may not. I filled the tank just over the output. There is still no real splashing. It is pointed straight up in the air, so it will move the water surface good but not affect the flow of my plants or fauna. I have made spray bars for this as well, but I really do not want to alter the interior of the tank, so this was the best solution I could find for now. Surface agitation without spray bars, air stones etc.

Hope this helps someone,
-2manyfish
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post #2 of 17 (permalink) Old 01-16-2017, 10:44 PM
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Also what I think would work would be a outflow with 2 heads on it so water would come out 2 instead of one

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post #3 of 17 (permalink) Old 01-16-2017, 10:56 PM Thread Starter
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It sure would. I posted this a little fast. It is dead silent once you fill it..I now have nice surface agitation without disturbing currents. I am certain of this will work. I will know once my tanks have cycled

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post #4 of 17 (permalink) Old 01-16-2017, 11:49 PM
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Quote:
Originally Posted by 2manyfish View Post
It sure would. I posted this a little fast. It is dead silent once you fill it..I now have nice surface agitation without disturbing currents. I am certain of this will work. I will know once my tanks have cycled

-2manyfish
Very nice

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post #5 of 17 (permalink) Old 01-17-2017, 12:30 AM
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I had a fluval spec v bit took out the filtration system in an thinking about putting in the middle of a 5gl rimless tank but not to sure yet

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post #6 of 17 (permalink) Old 01-17-2017, 12:37 AM Thread Starter
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That would be interesting. Would you divide the tank into 2? or use one side for the filtration? hmm...trying to picture that.
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post #7 of 17 (permalink) Old 01-17-2017, 01:08 AM
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Kind of like this

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post #8 of 17 (permalink) Old 01-17-2017, 01:10 AM
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Basically like that but the thing that getting me not to do it is the 5gl is only 8.5 in depth and the overflow would be 2.5 so the can't of the tank with filtration from the spec v would be 6 in in depth at least in the center of the tank. It will only be a shrimp tank low tech

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post #9 of 17 (permalink) Old 01-17-2017, 01:10 AM Thread Starter
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Awww...Nice!

Bump: This is true. Not much depth to this tank. perfect for a colony of shrimps. You have to think really small with this tank. I mostly wanted it for plants and a few shrimp to keep it looking busy if anyone stared at it for a minute or more.
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post #10 of 17 (permalink) Old 01-17-2017, 01:41 AM
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This is my mini m jus redid everything new rocks an substrate. Was fighting staghorn an green algae constantly so jus redid it . Got rid of my shrimp a few dwarf rasboras but along nicely some algae but not how it was




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post #11 of 17 (permalink) Old 01-17-2017, 08:58 AM Thread Starter
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Very nice!
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post #12 of 17 (permalink) Old 01-17-2017, 03:52 PM
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My Spec V is a couple weeks old, and I've been going through the same trial-and-error process. Either too much flow, or oil slick build-up on the surface. I prefer my flow as high as possible (without disturbing the livestock).

I don't have a pic of my final solution, but here's a photo of the prefilter sponge I found at my LFS. Very short (a plus in this size tank) with the pre-made hole. It actually fit right over the filter output, as seen here. But that was not enough flow.

I ended up sticking it onto a suction cup, that I then placed on the back wall about 2 inches from the output. It lets the filter run freely and keeps the current moving, but distributes it enough so that nobody is getting blown around in a tornado!

Just thought I'd share another option.
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post #13 of 17 (permalink) Old 01-17-2017, 04:41 PM
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Quote:
Originally Posted by Twillz View Post
My Spec V is a couple weeks old, and I've been going through the same trial-and-error process. Either too much flow, or oil slick build-up on the surface. I prefer my flow as high as possible (without disturbing the livestock).

I don't have a pic of my final solution, but here's a photo of the prefilter sponge I found at my LFS. Very short (a plus in this size tank) with the pre-made hole. It actually fit right over the filter output, as seen here. But that was not enough flow.

I ended up sticking it onto a suction cup, that I then placed on the back wall about 2 inches from the output. It lets the filter run freely and keeps the current moving, but distributes it enough so that nobody is getting blown around in a tornado!

Just thought I'd share another option.
Nice can u get a pic of above the outflow u made

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post #14 of 17 (permalink) Old 01-17-2017, 05:58 PM Thread Starter
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Excellent idea!
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post #15 of 17 (permalink) Old 01-22-2017, 07:56 PM
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I just ordered this Fluval spray bar from Amazon:

http://amazon.com/gp/product/B0002DICYQ
I ordered specifically because in the one review it has, the reviewer mentioned that it snapped right onto the spec V pump elbow and fit perfectly in their length of their Spec V. Assuming the fit is as easy as the reviewer implied, I will then drill out the outlet holes until I find my ideal "current" flow.

Should arrive (gracias Prime) by Wed...

Nano Freshwater Planted Tank
(5-gal Spec V; GLA inline Co2; InTank filter media basket)
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