Cyanos are mostly known as red slime on sand or rocks, however it is also available in a green color. First of all the route couse need to be detected to have long term success especially for balanced water chemistry on Phosphate, Nitrate, Magnesium, Alkalinity, Calcium and most important dosing of elements as Amino Acidic which can create an increase of Cyanos. Regular Water changes are very important approximately 10% per week for non experts to keep water parameter balanced, however some Marine Salts are also increasing the Cyanos grow which is not linked to a bad salt quality but mainly to the trace elements in the salt mixture. Also one of the most underestimated factor is to have pure water preferably RO water with an TDS of 0.00 which can be achieved with a resin filter media after the RO system. Why it is very important to have clean water? Even you have clean water in your tap water a little contamination over time can accumulate unwanted elements which can create a instability of the Reef Aquarium and difficult to identify.

The most problematic algae and diatoms are shown below on the pictures under microscope which are Dinoflagellates, Silica diatoms, Cyanobacteria

Silica is primarily available in sand and rocks, however also tap water and some salt mixture contain silica which is visible mostly on white sand which turs to an brown gold tone after the lights are switched on, as soon as lights are off for a few hours the sand becomes white again. This is the most easy algae to fight against. First eliminate the source of silica which can be your tap water or salt mixture and than bind the remaining silica with absorber media available here

Silica diatoms ( Brown Sand )

Dinoflagellates ( Brown sticky slime on sand and rocks )

Cyanobacteria ( Red or green slime on sand and rocks )

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