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View Full Version : Protein skimmer hasn't collected anything in over a week now...


mcbaes72
09/15/2008, 04:57 PM
Since my previous tank was skimmerless for six yrs (chaeto in sump only), I'm kinda new to using a protein skimmer again. My new FOWLR tank is less than two months old (see sig for list of fish). Whenever I clean the filter pad in overflow and do general maintenance every weekend or so, it usually takes about 24 hrs before the skimmer starts collecting waste again.

Well, it's been over a week now (since 9/6) and although I see foam rising in the skimmer column, it's not enough to push it into the collection cup (where a 1/2" flex tube and 2-liter bottle collects the waste). For a few days, I was allowing about 1/2 air flow (working fine for almost two months), but recently increased it to 3/4 air flow to see if this would produce anything. It foams up the skimmer column a little more, but nothing yet in the collection cup.

Maybe I'm worrying too much, I'm not sure. But is it normal for a skimmer to collect regularly, then a week or more passes by and there's nothing to empty out in the waste container? Maybe the chaeto in the sump is doing most of the work already and there's little waste built up for now. I still feed the fish the same amount of flakes/frozen foods daily.

Any suggestions? Am I supposed to prime it at full air flow after general maintenance, then decrease it afterwards? If so, I'm afraid it'll overflow w/ sw if I'm not home to adjust it during weekdays. TIA for any comments/opinions.

danorth
09/15/2008, 05:14 PM
Need more info. Is the skimmer in a constant level of water? Also, I'm not sure about the air flow question. Why would you decrease the amount of air?

mcbaes72
09/15/2008, 05:25 PM
<a href=showthread.php?s=&postid=13358779#post13358779 target=_blank>Originally posted</a> by danorth
Need more info. Is the skimmer in a constant level of water? Also, I'm not sure about the air flow question. Why would you decrease the amount of air?

Yes, ETSS skimmer and Eheim pump located in sump and fully submerged. (see pic below, shows old Rio pump though and chaeto wasn't added until after changing pump to Eheim)

When I first primed the skimmer at full air flow rate, it would produce a lot of sw in the container instead of foam waste. So, I lowered it a little at a time until it got to about 1/2 air flow rate where it was skimming fine for nearly two months. Just odd why nothing is collecting this past week and a half, even after increasing the air flow.

http://i49.photobucket.com/albums/f257/mcbaes72/Misc/0322.jpg

danorth
09/15/2008, 05:37 PM
The water could be too turbulent to form a foam head. I have seen the name ETSS, but don't know about its operation. I would ask in the the Lighting and Filtration forum.

ronhjr
09/16/2008, 12:37 AM
your output must be completly underwater. I have a etss 600 and ran into this. Increase the water in your sump and it should work.

mcbaes72
09/16/2008, 10:31 AM
<a href=showthread.php?s=&postid=13358915#post13358915 target=_blank>Originally posted</a> by danorth
The water could be too turbulent to form a foam head. I have seen the name ETSS, but don't know about its operation. I would ask in the the Lighting and Filtration forum.

I'll search that forum first before posting. I must've seen about 4-5 threads on pg 1 re: skimming alone. Maybe one of those will answer my question. Thanks for the suggestion.

mcbaes72
09/16/2008, 10:33 AM
<a href=showthread.php?s=&postid=13361797#post13361797 target=_blank>Originally posted</a> by ronhjr
your output must be completly underwater. I have a etss 600 and ran into this. Increase the water in your sump and it should work.

I'm well above the water line the sump requires, but I'll add another gallon or so and see if that helps in the next couple of days. Since it worked for you, I'm hoping it'll do the same for me. Thanks for the advice.

mcbaes72
09/18/2008, 12:26 AM
Good news! I got home and the skimmer was collecting waste. In fact, w/ the air valve fully open, it was producing so much water and foam that it filled the 2-liter bottle and was overflowing back into the sump. So, I closed it a little at a time and it's back to 1/2 air flow rate.

Thanks to everyone who helped give advice.