Air pumps are obsolete for running UGF's. Use the powerhead with it's aeration function. Also buy a gravel vacuum siphon, as you will have to clean the gravel.
Twenty five thousand species, accompanied by an equal number of pictures and drawings, makes any regular atlas almost obsolete. There are some things to remember when ordering it from the though.
(This product is now obsolete having been effectively renamed as SafeStart by Tetra.
Stability by SeaChem. A nitrifying bacteria that makes new tanks ready to take fish within 24 hours or less. Also contains a waste control bacteria species.
Many folks mistakenly think that undergravel filters are obsolete. However, when it comes to freshwater aquaria, nothing could be further from the truth.
Toonen R (2000a) Are Plenums Obsolete? Another viewpoint, Part 1. Freshwater and Marine Aquarium (FAMA) 23:44-66
Toonen R (2000b) Are Plenums Obsolete? Another viewpoint, Part 2. Freshwater and Marine Aquarium (FAMA) 23:44-70 ...
Britz (2004) obsoleted the name Colisa, but its popularity continued in the literature. In 2008, J. Topfer thoroughly investigated the issue and recommended renaming of the species and K.-H. Rossmann (2008) followed.
Older aquarium books often refer to this species by an obsolete Latin name, Pristella riddlei. Aquarists tend to refer to this fish as the x-ray tetra, though some call it the x-ray fish instead.
Given the availability of pre-made tanks with in-built filters and pumps they have largely become obsolete a trend evidenced in the sales of the newer models.
The common name of "plec" or "pleco" is derived from the obsolete genus name of Plecostomus. A number of different species are often sold under the name of "common plec", which may include other species in addition to the ones above.
The old-fashioned Clark system for hardness was somewhat laborious, being based on measurement of the foam created by a soap solution, and has now become obsolete.
A side benefit to the seller might be that he can simply label the tank, "Mixed African Cichlids" and not worry about whether or not all their Latin names have become obsolete since last month.
Packages vary from store to store, some are more appropriate than others. Be especially wary of setups bought at discount stores (e.g., ``Hartz'' brand). They often include obsolete technology, noisy pumps, cheap heaters, etc.
 See also: Water, Aquarium, Fish, Species, Freshwater
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