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Too little information! Lighting? Water parameters? Flow? Location within the tank? Neighbors? I know they aren't crazy about MH up close and personnal...too much light.

Yes, you can drill acrylic using the same tools you would use for wood. Therefore, it is not the same as glass...a lot easier...and faster.

AND that's their way of getting back at the newbies who win all the raffles! ;D

Pretty neat idea…it looks like you’re using a NPT coupling to a NPT Tee to act as your bulkhead. Realize you are dealing with two seals. The seal of the “bulkhead” against the glass…using that rubber washer…and also the seal of the threads within the tee. I would wrap that coupling with a good...

First off Erna, our prayers are with you and your family. I cannot stress this enough that the mom and dad, and maybe grandparents, need to join some support group. As a father, of a now 26 year old, who was born with a “little abnormality,” this was our saving grace. Hearing other people’s...

The only thing I can see in your picture is that worm in the bottom of the photo with bristles….that’s a Bristle worm.  They are considered a problem…not so much when they are small.  I definitely would NOT put that little bugger back in the tank. I don’t see any starfish in your photo.  I’m...

First, there is nothing that will drill a rectangular hole. If you want a rectangle, two potential ways: 1. drill a pilot hole and then use a jig saw to cut out the rectangle 2. Make a template and then cut out the rectangle with a router. If you want a round hole, a hole saw is what you...

Joe, just so you know, I’m pretty sure the flex tubing you are talking about will not fit directly on the barbs coming off your bulkheads.  If it is the flex I know of, it is made to glue-up in standard PVC fittings.  When you go to connect it to your barb fittings on your bulkheads, I’m pretty...

Joe, without question, slap a tee on the return line to the tank. Here’s a pic of the tee coming off a Mag 9.5 in our sump. What is not seen is that the tee’d off line goes to a valve. You can then use that valve to meter the rate of return of water to the tank. A definite must!

Great!  When can I stop by to pick up that half-eaten Pocillpora and Green Slimer? ;D

I read the first line of your post. I then went and mixed up some Potassium Permanganate with Sulphuric acid to make permanganic acid, a highly caustic cleaning acid. I dipped the powerhead in and watched it start to rapidly sizzle, and then came back to finish reading your post...

With all the chatter about RO/DI water, I have never tested my RO water and would like to pick up a meter to find out what I’m putting out. Any suggestions on the brand / type of meter I need to get to do the testing? Thanks.

You don't want to use sand as a base for your rock. What happens is that the "diggers" undermine the rock and could cause for your rock to tumble over. You need to put rock directly on the glass, egg crate, cutting board, or what ever hard stuff you use. This way the diggers won't undermine the...

Wow….I’m feeling seasick. :o I like the ruler showing a 2 inch wave….good stuff. Now, where’s my surfboard! Did you do the original build or did you include the modifications, that seem to continue to come?

They are submersible and come in different flow ratings....the Mag 9.5 pushes 950 gallons an hour at zero head height (I think...or at some fixed head height).  The 1200 gph mag is listed as Mag 12.  Pretty straight forward.  Sounds like you have a similar size display tank.  I have a 48 gallon...

Depends on your application and size of your tank. I’m running a Danner Mag Drive 9.5 on a 48 gallon display. No pump noise…put plenty of water-movement noise. This would NOT work on a 180+ gallon tank with big sump / refugium…you probably would be using some external pump, that I know nothing...

No mesh. Just egg crate. Let the little squares fill up with sand...not a problem.

Wow, a ½ inch drop within (I’m assuming) a 6 foot tank; and a ¼ drop within…maybe 18 – 24 inches. How old is this house and are there potential structural problems? Anyway, typically what is used to level bathroom situations is a material called leveling concrete…it’s available at HD & Lowes...

First I agree that rock directly on glass will not cause the glass to crack. In support of egg crate…rock on glass slides around. If you build a rock structure that has lateral forces involved, you potentially could “push” the rock on that hard, slick surface of glass. By using egg crate, you...

Egg crate! First place the egg crate. Next goes the rock. Finally the sand. You don't want the sand supporting your rock. With time, the "diggers" will undermine the rock and could potentially cause for it to go tumbling down. Placing rock directly on the egg crate gives it a solid foundation.