Upgrading to a HUGE skimmer?

chgoblknazn

New member
I have a 30 gallon display tank and a 16 gallon sump. I currently run a Bubble Magus BM-NAC3.5 Cone Skimmer. Last weekend I saw a fellow reefers tank and it was stunningly clean. The setup was one of the best I have ever seen. When he opened up the cabinet to show me his sump I noticed what appeared to be a skimmer but it was HUGE. I've never seen one that big in my life. I asked him what it was rated for and it was well past his tank size, maybe even past double his tank size but he said it works great and he loved it. It was churning bubbles out and scrubbing that column of water in it. It was hypnotic.

I've always read that you should always buy the biggest for your tank depending on your size and the most you can comfortably afford. Mr. Saltwater Tank says buy Go +1 and my visit last week has me wanting to go as big as possible, since I feed pretty heavy and in case I decide to upgrade in a few years. I've scoured the threads and read as much as I could about over-skimming but there really isn't much out there for a tank my size.

My first skimmer was a Hydor Nano Slim. My second is the current Bubble Magus NAC3.5 but I want something bigger to pull out as much of the organic as possible. I was thinking of going with the SWC 150 BMK or just adding a few more dollars and going with the SWC 160. I've read the specs for the SWC 120 and it seems pretty close to my current skimmer.

In my opinion I have a pretty medium load with a bunch of LPS/SPS and 1 Resplendent Anthias, 1 Court Jester Goby, 1 Yellow Assessor, 3 tiny Red Spot Cardinals and 2 small Occelerus Clowns. The clowns will be gone this weekend to make way for a Chalk Bass. There's also a Cleaner Shrimp in there and the typical cleanup crew and a Sand Star in the sump along with a few Emeralds. I'm sure I'll be adding more coral so I'm thinking this is a Med/High Bioload.

Would adding one of the above much larger skimmers be detrimental to my setup? Should I stick with what I have? I really want to upgrade to one of the larger ones.
 
I wouldn't upgrade THAT big personally. On my old 140g tank I ran a skimmer rated for a 600g+ tank, and it performed HORRIBLY. Compared to the skimmer size my bioload was so load that it wouldn't form a stable form head, and as a result the crud generally just collected in the neck of the skimmer.

Its my understanding that the huge foam heads we see are not just the saltwater, but the crud we're trying to extract. When I set up my Tunze Nano DOC skimmer on a 35g tank with fresh saltwater I couldn't get it to pull a foam head. Dump some fish food into the tank to start the cycle, and the skimmer is producing stuff now.

Tyler
 
The best perfroming skimmers I have had have been sized at or around the tank size. The worst ones have been oversized. The worst offender was rated for about 4x my system, and it was awful. Nothing but some crud in the neck, nothing in the cup,.
 
I have a 125g rated on my 65g plus 15g sump and it performs like a champ and my water is always clean.
 
I had an extreme 250 on a 100 gallon tank and it was way over sized. It would never keep a stable foam head. Too big of a skimmer is definitely a bad thing.

Drew
 
On my old 140g tank I ran a skimmer rated for a 600g+ tank, and it performed HORRIBLY.

The best perfroming skimmers I have had have been sized at or around the tank size. The worst ones have been oversized.

I had an extreme 250 on a 100 gallon tank and it was way over sized. It would never keep a stable foam head.

X2.

My current BM pulls out quite a bit of nasty stuff and I get dark skimmate but I want to pull out even more.

Just remember, the skimmer does not differentiate what it pulls out. It pulls both the good with the bad. Water changes will put back the good, and take out the bad. Your skimmer is rated for twice your current volume. If you feel like it is not pulling out enough bad stuff, try more frequent water changes and feed less often. JMHO.
 
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