Surface Scum

aibcarpentry

Member
Sep 23, 2017
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Banbury, Oxfordshire
Unsure if this is posted in the correct place so please move if need be.

I'm just wondering how other people combat this problem.

I run my aquariums using spraybars as I just don't know how people get circulation so even without them!
That's not why I started this thread though.....................

I get a build up of surface scum unless I run a little surface skimmer which in turn messes with my water flow.
Should I aim my spraybar up higher? But then I'm dispersing more CO2.
At the minute I'm confined to the thinking that running the skimmers on timers is my way forward.

Does anyone else have have info on how they combat this problem?

Cheers
Andrew
 

Tim Harrison

Lifetime Member
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Jul 7, 2017
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Surface scum or biofilm is one of those enduring problems that effects everyones tank at some point or other. Surface agitation helps reduce it's formation, so aiming your spray bar more toward the surface will help. Other than that surface skimming is the way forward. You can buy lily pipe inflows with a surface skimmer, but you really need a filter that has a through flow of about 1000 l/h for them to work properly, without too much fiddling.

Yes you'll probably use more CO2 but like most things planted it's a trade off. I think you have to take the attitude that CO2 is free. Surface agitation increases gas exchange, but the pay off is increased O2 saturation which is good for the critters and perhaps means you can increase CO2 conc. to the benefit of the plants; the two are not mutually exclusive...

2016.08.09_07-05-05AQUA%20MUSIC%20Glass%20Inflow%20-%20Surface%20Skimmer%20Series.jpg
 

aibcarpentry

Member
Sep 23, 2017
49
15
8
37
Banbury, Oxfordshire
aiming your spray bar more toward the surface will help
Hi Tim,
I am going to have a play around with number of holes and direction of spraybar.
My filter does have a flow rate of 10000 LPH but I'm not really a fan of those intakes and find them a bit big, bulky and clumsy.
If the spraybar doesn't work then I will have a play with the skimmers and a timer.
 
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