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Saturday, 12 July 2008 10:43 |
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Gravel algae, Silica algae Color: Brown Appearance: Brown algae begins as brown patches on the gravel and/or glass, then rapidly coats most surfaces of the aquarium with a thin, dark brown coating that is easily removed. Unlike blue-green/slime algae, it does not come off in large slimy sheets. Cause: Excess silicates & nitratesInadequate lightLow oxygen levels Brown algae is a common occurrence in a newly set up aquarium. It is generally caused by too little light, an excess of silicates, an abundance of nutrients, and too little oxygen. Silicates can build up through tap water that is high in silicic acid, and silicates that leech from some types of substrates.Cure: Wipe off surfaces & vacuum gravel wellUse silicate adsorbing resin in the filterIncrease the lightingStock a plecostomus or several otocinclus This type of algae does not adhere strongly to the tank surfaces, and is easily wiped away. Vacuuming the gravel with a siphon will quickly remove coatings from the substrate. Increasing the lighting will inhibit re-growth of brown algae. As a new tank matures brown algae is often eliminated naturally by plants and green algae competing for nutrients.Some sucker-mouth catfish will readily eat brown algae, most notably plecostomus and otocinclus. If the problem is due to high silicates in the water, and the brown algae persists, a special silicate absorbing resin can be used in the filter. Prevention: Use of RO waterRegular water changesRegular aquarium cleaningGood lighting As with any algae, keeping the tank clean and performing regular water changes is one of the best preventative measures. Unfortunately it is still possible to get algae in spite of regular maintenance, especially in a newly established aquarium. Prompt attention to sudden algae growth will prevent more serious problems. Other Types of AlgaeBeard Blue-green Green Water Other Types of AlgaeSlime Smear Spot
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Last Updated ( Saturday, 12 July 2008 11:08 )
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