How LOW if too LOW for the FLOW?
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Old 04-05-2013, 04:01 PM   #1
DefStatic
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How LOW if too LOW for the FLOW?


So I have an Evolve 4. Been trying to find the sweet spot as far as the filtration output flow for my Betta.

The built in filter supposedly does 100GPH on the highest setting. Around 55GPH on the lowest. The lowest was far too much flow still for a Betta. So I added an adjustable valve to the output.

I was slowly trying to find the sweet spot. I thought I had settled on where it was, which was somewhere between 1/4 and 1/3 closed. I felt the flow was good, but my Betta still seemed to have to struggle a bit.

So I gave it another slight turn, easily at 1/3 closed. Now I feel like this is too low. I have next to no movement throughout the tank, and just barely a trace of movement at the surface.

My question is, at what point am I actually causing more problems? After watching him swim around now, he seems to like it better. But I am also noticing that times where i thought he was struggling, he perhaps was not and it was just how he is.
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Old 04-05-2013, 05:13 PM   #2
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One thing I've experienced with low flow, coming from an Azoo palm filter, was increased film on the water surface. Also, in my case there was algae or some type of growth suspended from the film, brown in color. I netted it out and everything seems fine, but every tank is different. You might try using a piece of hardscape to break up the line of flow so it won't push things around so much.
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Old 04-05-2013, 05:18 PM   #3
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I am thinking of turning the flow back to where I had it, and putting a piece of sponge or something over the output to diffuse it.
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Old 04-05-2013, 08:07 PM   #4
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Is the flow direction adjustable? Maybe if you point it upwards and toward the front of the tank the flow will dissipate off of the front acrylic. You would have to fix the sponge to the output pretty securely, as it will be under constant pressure. I'm not sure that would work when I think about it in theory.
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Old 04-05-2013, 08:45 PM   #5
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I would suggest instead of slowing the flow you make your betta work for it. I put a betta in my 90 gal and it was almost allway pasted to the glass. At least at the start. It was weak from the pet store and never had to build up any endurance. Give it time and it will adjust to the increased flow in you tank.
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Old 04-05-2013, 09:26 PM   #6
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Default How LOW if too LOW for the FLOW?

Turn it up all the way and just put something in front of it like a driftwood piece or something


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Old 04-07-2013, 01:04 AM   #7
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Would the lower flow account for problems with algae? Because I had no problems until I tried to reduce the flow even more.
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Old 04-07-2013, 07:58 AM   #8
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I would suggest the exact opposite for your betta, especially in a small tank. Make the flow as low as possible for your betta. Plants can grow well in very low flow in my experience.

If you're changing your flow rate significantly, there can be probelms tho...plants can die/melt, you may get algae, and your water quality may suffer while your tank adjusts.
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Old 04-07-2013, 04:56 PM   #9
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Quote:
Originally Posted by Jason K View Post
I would suggest the exact opposite for your betta, especially in a small tank. Make the flow as low as possible for your betta. Plants can grow well in very low flow in my experience.

If you're changing your flow rate significantly, there can be probelms tho...plants can die/melt, you may get algae, and your water quality may suffer while your tank adjusts.
I agree, but I have to have some water movement. I seem to have reached a point where I am not sure where to go.

Do I have too high light and not enough nutrients? I am getting green and grey algae all over the place. Should I look at using CO2 sooner than later?

My Argentine Sword (I thought it was Amazon) is doing ok, but starting to get some algae on it. The "Asian Water Fern" is just doing nothing but get algae on it.

Guess I do not know as much as I thought I did LOL. But I am trying.
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