biofilm problems - The Planted Tank Forum

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post #1 of 43 (permalink) Old 01-11-2013, 12:39 PM Thread Starter
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biofilm problems

Hi,
I know this topic has been discussed many times, why is biofilm in a tank?
If there is a link between phosphate and biofilm?

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post #2 of 43 (permalink) Old 01-11-2013, 02:14 PM
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Are you talking about the surface of the water?
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post #3 of 43 (permalink) Old 01-11-2013, 02:31 PM Thread Starter
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Yes, biofilm on the surface.

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post #4 of 43 (permalink) Old 01-11-2013, 09:18 PM
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From what I recall, the biofilm on the surface of the water is generally proteinaceous in nature, so it probably comes from fish food, and not phosphates.

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post #5 of 43 (permalink) Old 01-11-2013, 09:55 PM
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Various protein skimmer assemblies (salt water people use these), put the output of the filter at the surface temporarily, paper towels

We all deal with it from time to time. It usually happens the day or two before a water change and I put the filter output at water level when the lights go out (not to vent CO2) and it reincorporates it into the water - the next day a w/c does away with it
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post #6 of 43 (permalink) Old 01-12-2013, 07:38 AM Thread Starter
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Hi ,
Thanks for the replies, excess protein is the main problem?

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post #7 of 43 (permalink) Old 01-12-2013, 08:07 AM
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Yes, excess food. I have the biofilm disappearing by itself if I don't feed the fish for a couple of days. I don't skim the water surface at all. I don't see a point in doing that.

Feed less and often than once in bulk. If you can't, invest in an automatic feeder.

Cheers!
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post #8 of 43 (permalink) Old 01-12-2013, 08:34 AM
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Quote:
Originally Posted by danielt View Post
Yes, excess food. I have the biofilm disappearing by itself if I don't feed the fish for a couple of days. I don't skim the water surface at all. I don't see a point in doing that.

Feed less and often than once in bulk. If you can't, invest in an automatic feeder.

Cheers!
Daniel has it right. usually too much food causes it.


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post #9 of 43 (permalink) Old 01-12-2013, 08:45 AM Thread Starter
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Excess protein in food is shrimp believe.

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post #10 of 43 (permalink) Old 01-12-2013, 09:43 AM
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Shrimp, krill, fish meat. Any meat put in the food mix. Don't know about vegetable protein though. I'm thinking of soy protein.
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post #11 of 43 (permalink) Old 01-12-2013, 09:47 AM
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once about 2 years ago on a asian aquarium site i had see a diy made from a cheapo micro internal filter upsidedown (inlet up outlet down :P )put inside a grided cut inlet pipe... and now for a while i see amano's vuppathing ...deja vu? Lol

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post #12 of 43 (permalink) Old 01-12-2013, 12:53 PM Thread Starter
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Can you send me the website address?

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post #13 of 43 (permalink) Old 01-12-2013, 05:32 PM
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Quote:
Originally Posted by danielt View Post
I have the biofilm disappearing by itself if I don't feed the fish for a couple of days... Feed less and often than once in bulk.
Cheers!
sadly that does not always work. i have a tank that i feed once or twice a week and i still have have biofilm, the amount of food that i feed is minimal because the fish is rarely out for food. of my 5 tanks 3 have biofilm, really its only of 4 tanks because one has a surface skimmer.

the best "cure" to biofilm is surface agitation, or a surface skimmer.

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post #14 of 43 (permalink) Old 01-12-2013, 06:09 PM
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Air stone on a timer, 30 minutes a day, best when the CO2 is off. Cured.
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post #15 of 43 (permalink) Old 01-13-2013, 08:17 AM Thread Starter
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Thanks for the reply, if a pump wave supplement may be the solution?

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