Nurse Shark Aquarium

Small water changes (20%) each month will keep the water in good shape until spring. Koi are "jumpers"-so be sure to cover the pool with bird netting!
Improper seasonal feeding can lead to a build-up of toxic ammonia, which stresses fish and reduces their winter survivability. When the water temperature drops to approximately 65 F, start feeding with Spring

While I agree that reverse flow may help keep the gravel somewhat cleaner, I cant really be bothered with this option. It does not completely eliminate the need to vacuum the gravel while doing a water change. Inevitably, some debris will settle in the gravel and will need to be removed. Also, the powerhead and its sponge prefilter are also kind of big and ugly, making this kind of setup even more obtrusive than a standard installation. Lastly, in large aquariums, heavily decorated aquarium or other situations where thoroughly vacuuming all the substrate would be impractical, I normally dont use an undergravel and i

nurse shark aquarium

Overflow water gravity feeds via pipe to the reservoir sumps, out of the public view. Here the water is heated, filtered and sterilized; using some combination of fluidized bed (wet-dry), sand, diatomaceous-earth, cartridge filtration to remove particulates; chemical filtrants such as carbon, peat and zeolite; and physical filters like ultraviolet sterilization ozone, protein skimmers to reduce organics. There are many companies offering these products and design services (see p.282 of PSMs Buying Guide & Directory, Special Product

3.Rocks; pebbles; slate; crystals; semi-precious stones; drift wood pieces; shells, anything that goes in water can be used.
Each item can have a special meaning, thus adding to the individuality of your fountain
If you select rocks from your garden make sure you clean them well in a water-bleach bath. You can substitute polyethylene spray foam for bigger rocks thus reducing the need for heavy rocks.

The stand upon which the tank sits is to be as close to perfectly level (planar) as possible with a tolerance of mere fractions of an inch (a few mm). Imbalanced tanks can place undue pressure on a side or seam and cause a leak. Irregular surfaces (knots, divots, fastener heads poking up, etc.) can cause pressure points and lead to a crack in the glass or acrylic. Likewise, the posts and pillars of the stand should make a large footprint to distribute the weight of the aquarium. Narrow legs or excessive shims c

Fish Across The World
Aquarium fish are popular the world over. Ever wonder where the most fish are kept as pets? Here are the top ten as of the year 2005: 1. USA....

Hitchhikers !! Part 1 & 2
Part 1 http://reefkeeping.com/issues/2006-04/reefslides/index.php Part 2 http://reefkeeping.com/issues/2006-08/reefslides/index.php.