I only used a HOB
filter on my 29 to run GAC
in. Good water flow and 1.5-2 lbs per gal LR
is all that is absolutely necessary. The LR
fills all the biological filter needs, and good water flow keeps water chemistry inline and brings nutrients and waste to and from coral. If your not going to have a skimmer, it is even more important IMO
, and I highly recommend having, a place for GAC
or similar media. If it has to be one or the other, I would choose a skimmer, though I prefer to use both.
Do I need skimming with such a light setup, or could I get away with a very well/frequently-cleaned HOB filter?
A skimmer is always a plus and will make a difference, but it's not absolutely necessary on all set ups. You will have to be more diligent about not over feeding and keeping up on regular PWC
How much LR
do you have and how much flow/turnover?
BTW welcome to AA.com!