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I want to put a bulkhead in an acrylic sump. It calls for a 1 7/8" hole. I can't find that size hole saw, but I have a 2". Is that close enough? Any thoughts? Thanks.

Any harm or benefit from putting a lot of bioballs in the bottom of the sump, not just in the wet/dry part? Would they cultivate additional beneficial bacteria? Thanks.

I read a whole bunch of threads on ich, and it's fairly clear that the best way to treat it is remove all the fish to a hospital/quarantine tank with hyposaline water for 3-4 weeks, then quarantine all new fish. I got that. However, if someone wanted to take a shot at treatment in the fowlr...

Sorry I asked about an obvious FAQ. I feel stupid now. Thanks.

With 5 large (6-7") aggressive fish in my 150, they tend to make a mess when they eat. The Humu chews and spits part of it out. They tend to eat in big chunks, and not mess with little bites. So, and this wasn't planned, I also have 4 damsels and 2 small clowns in the tank. For some reason...

Can anyone I.D. this wrasse for me? The LFS said "banana wrasse," but looking around, it doesn't seem like it. Thanks.

My puffer apparently gulped some air and is stuck on the surface. Any ideas what to do? Thanks. He's shown on this page: http://www.midcalracing.com/fish.htm

Not very good at photography, but here goes... http://www.midcalracing.com/fish.htm (it is ok to post a non-commercial link, isn't it?)

I have a new Ocean Clear 375 (uv+pleated filter) and the manual is pretty bad. It talks somewhere about an o-ring sealing the lid, but I find no o-ring. Is there supposed to be one? Thanks.

Came home yesterday (Tuesday) to find my 7" porcupine puffer (Stewie, because his face was like the cartoon character baby on Family Guy) breathing hard on the bottom, and here at 2 a.m., he's dead. Brought him home Saturday morning. and he seemed perfectly fine up through Tuesday morning. Did...

I have a black oak All Glass canopy on my 150. I'm running some bright lights that really heat up the tank. Before I go with a fan, I'm thinking that venting the top of the canopy (the big door) would be good, but I can't decide the best way to make a really good looking vent. I've looked at...

Got a 150 with a spotted puffer (6"), porcupine puffer (7"), queen angel (6"), and banana wrasse. I try to follow the "2 minute" rule (feed what they'll eat in 2 minutes), but these guys will eat indefinitely. I don't want them to go hungry, but then I don't want unnecessary waste in my tank...

How much will reducing stocking of a 150 fowlr aggressive tank from about 6-7 (I know, I know) fish to 2 or 3 reduce maintenance? Thinking of pulling out 3 triggers, leaving a puffer, wrasse, and angel. Will it make much of a difference in water quality, need for testing, etc? Thanks.

I'm replacing a return pump with a Mag 24. Before installing it, I wanted to make sure it was working, and I wanted to hear how loud it is. So, I submersed it in my RO trash can, allowed the air to escape, and plugged it in. Nothing, except a very small hum. No water movement. Does this mean...

I'm suddenly geting bright white growth on my live rock. All parameters are very normal, except pH a little high at 8.5. I've never seen this before. Any ideas?

In my 150 aggressive tank, my Pinpoint electronic pH monitor apparently has been misleading me (despite careful calibration). It has been reading 8.0-8.1, but upon double checking with both test strips and a fancier chemical test tube test, I'm getting 8.5. I had been adding buffer to bring it...

Anyone know a good source of info on procedures and recipes for making buffered water for top offs and replacement salt water? How long to "age," those sorts of things? I have my RO setup going and have 50 gallons of water sitting there, but I'm a little unsure of myself now. Can you do things...

Do lions sting the other fish, or do the others just know enough to stay away? Thanks.

Have a 150 with a Megaflow sump. I'd like to add a canister filter, maybe even one with a built in UV. Is it better to upgrade the return pump and plumb the canister into the return, so that all water is filtered, or run a separate closed loop in and out of the sump to the canister? The first...

I have a 150 with compact 2x 96 watt actinics and 2x 96 watt 10k. Which lights promote algae growth more? The 10k seem much brighter, but I have no idea how that matters. Starting to accumulate brownish algae where the light hits the rock. Thanks.