I read this on ARC reef that also sells a liquid form of purple and pink (separate) coralline algae spore. It made me feel great about my 4 month tank. Hope it makes you feel good too!
Green coralline algae is usually something that is misidentifed by a newcomer into the aquaria hobby. Many times the hobbyist will purchase a new saltwater aquarium, set up his brand new reef tank and after 3 or 4 weeks go by will start to see diatoms on their new reef rock. Diatoms appear as a brown filamentous coating. These diatoms will be on the rock, on the glass, and will look like sprinkled cinnamon on the sand. After 1-2 months these diatoms will now die off without silicates present in the water column in which to feed off. After diatoms now will come different types of green algae. One green algae that does not need to be introduced is called. Remember, any coralline algae must be introduced to the tank, it will not grow on its own, this included green coralline algae. This type of green looking algae can appear almost neon in color. It is fast growing, and can coat your rocks in a matter of a week. This is usually the time where you may want to freak out, but don’t. This green algae is actually a precursor to coralline algae. It can be even taken as a sign that your tank is well on it’s way to being a healthy, mature, and fully cycled reef tank. This alga will 100% of the time, be replaced by actual coralline algae in time. People often confuse this alga for green coralline algae, it is not though. Green coralline algae is very slow glowing. It will never propagate over an entire reef tank like your common species of coralline. People often give misadvise, stating that if you have to scrape it, or if it can’t be removed with your finger then it must be green coralline algae. This is not at all accurate. This green algae will not turn to coralline algae either, it will be replaced and grown over by coralline, this will only happen though once your tanks water quality is up to par. If your water parameters fluctuate, your nitrates are high, or your flow is low then it can take up to 1 year to be replaced. Normally if everything looks good then the average timeframe will be 2-4 months for this phase of your tanks cycle. This is the last phase befor your aquarium officially graduated to a “mature tank”. It should be viewed as a confirmation that your tank is on the home stretch. Do not panic, do not acid wash all your rock and reef work. Be patient and enjoy this finaly stage properly. Green coralline algae does exist though but these species are extremely slow growing, they often only grow in small circles and will never spread over an entire tank. Keep an eye out for our next article, it is an in-depth look at Green Coralline Algae vs Purple Coralline Algae.
