
18-08-2010, 09:38 AM
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Re: Algae eater types
Shrimps would be ideal. But, to be perfectly honest, I wouldn't buy any fish or invertebrate for the sole purpose of consuming algae. Otocinclus sp. do consume algae, however I prefer these for larger tanks and as you've pointed out, they are quite delicate and therefore should only be introduced into a well-established tank.
If you trawl the internet, you'll find that many people use Plecs to control algae. However, you'll also find a long list of reasons why you shouldn't. Many species of Plec are actually omnivorous; and some are carnivorous. Due to the misconception that they consume just algae, hundreds of these fish starve to death in aquariums due to not being fed the right food and through not receiving the correct amounts of protein. Several 'L-number' Plecs also die due to not receiving an organic chemical called Lignin, which is found in certain natural woods (including bogwood). This chemical is like the 'fibre' of the aquatic world.
The best way to control algae is to control environmental factors that can cause algal growth in the first place. Parameters such as nutrients (trace elements such as magnesium are highly important, as it is used to form chlorophyll), CO2 and light intensity must be kept in balance. The usual periodic maintenance will also help to keep algae in check.
Fast-growing plant species such as Hygrophila will help to keep algae growth down (under the ideal conditions) as they literally suck excess nutrients from the water. But - contrary to popular belief - nutrients such as nitrate and phosphate do not cause algae in a well planted aquarium.
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