So the skimmer that came with the second-hand Biocube is an SR3 from CPR Aquatics.
It has proved to be a nuisance in the short time I've had it. No matter how I try to adjust it, it creates bubbles and either has much too wet foam or barely any foam (won't actually get into the collection cup). I spent several hours yesterday on it, adding water, removing water, adj. the o-ring up and down and nothing seemed to work for more than a few minutes.
I'm torn now between just selling it on CL or getting some advice and trying to fix it.
It was driving me nuts and the bubbles were bothering the livestock so I just removed it and put several chunks of my LR in its place.
So what is the best course? Are there any dangers in not having a skimmer in a 29 gal? Of course, I can do water changes, provided they aren't more often than once a week.
Thanks in advance for your help and patience with this noob