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Old 03-08-2014, 06:53 PM   #1
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issues with Fluval Heater E300

hey guys, I made it and have now this great big heater for my 75 gal tank.
BUT I'm having issues with it.
It has this error code LF for low flow. I tried all kind of different positions in the tank and this is always coming up.
I have two biowheel filter and the water movement is on top. To high for the sensor of the heater.
So now what? Airpump bubblemachine.... it just never ends
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Old 03-08-2014, 11:44 PM   #2
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Originally Posted by Turtle71 View Post
hey guys, I made it and have now this great big heater for my 75 gal tank.
BUT I'm having issues with it.
It has this error code LF for low flow. I tried all kind of different positions in the tank and this is always coming up.
I have two biowheel filter and the water movement is on top. To high for the sensor of the heater.
So now what? Airpump bubblemachine.... it just never ends
I have the same heater on my 55g and when I switch off my circulation pump, I get the same message. Solution....you need a circulation pump/power head....
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Old 03-09-2014, 12:04 AM   #3
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issues with Fluval Heater E300

Or try a large air stone close to the heater, but not close enough that the bubbles get in the heater though
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Old 03-09-2014, 04:50 PM   #4
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entering a new world again full of air pumps and air stones
I was digging through the bag the guy gave me I bought my tank of. And there it is: Marineland Air Master 3000 some kind of Air pump I guess. Now what can I do with it? Is this thing good for 75gal? It doesn't have a hose or anything.
Then I found an air stone kit. Has hose, valves and small stone in it.
hm what to do?
Please tell me what I need and what this thing can do if usable at all

My new heater is not doing anything. Is stuck at 77 F with LF blinking. I put the old heater back in so my fish don't freeze.
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Old 03-09-2014, 05:28 PM   #5
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Put the air stone close to the heater, but not so close that the bubbles touch the heater. This will increase flow around the heater, and hopefully eliminating the error.

You probably should invest in a power head for that size tank.
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Old 03-09-2014, 05:45 PM   #6
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Put the air stone close to the heater, but not so close that the bubbles touch the heater. This will increase flow around the filter, and hopefully eliminating the error.

You probably should invest in a power head for that size tank.
Thank you anibis.
I could cry. Another at least $70 investment. This month is really tough on equipment
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Old 03-09-2014, 05:56 PM   #7
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Powerheads aren't that much.

Water Pumps & Wavemakers: Hydor Koralia Evolution

Something like that would work well.

This is an expensive hobby, that's for sure. They bait you with a cheap tank, then you end up needing a stand, filters, heaters, lighting, all the decor. Once you have everything you need it's not so bad.
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Old 03-09-2014, 06:08 PM   #8
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Powerheads aren't that much.

Water Pumps & Wavemakers: Hydor Koralia Evolution

Something like that would work well.

This is an expensive hobby, that's for sure. They bait you with a cheap tank, then you end up needing a stand, filters, heaters, lighting, all the decor. Once you have everything you need it's not so bad.
hey the price is really nice. Now I have to find this product in Canada. I tried to order it but it cost $20 shipping. grrrrrrrrrrrrrrrrrr
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Old 03-09-2014, 06:34 PM   #9
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Ahh yea I didn't know you were in Canada, things are more expensive up there.

Just look around, I'm sure you can find one for $45 or so.
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Old 03-10-2014, 12:56 AM   #10
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check ebay, you can find a knock-off chinese brand very cheap, and maybe cheap shipping to where you are.

Did you take the plastic shroud off the heater body and check the body for debris or calcifications? A sensor may be clogged. You have a really good heater, I hope you can get it to work.
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