Help identifying changes in tank.

[Stv]

Hello everyone,
Tank is 9 months old now and has been really successful. BUT I’m starting to see a change with respect to algae. Have gone thru all the normal changes but have never had algae growth other than the color but no length to any of it. CUC has always kept everything in check. No problems in the sand at all. No bubbles in the green just hairs now. The red I’m hoping is cloraline on the rocks as it’s starting to take over the back wall of the tank as well. Parameters and in check. AI prime light with low UV and white light settings. 31 biocube. UV always on. Any help identifying both the green and red would be super helpful so I can attack it early before I have an issue. Pics and video are under white light only.

 

[Nano sapiens]

The red is coralline (good), the green could be any number of turf algae species (can outcompete other life forms under the right conditions).

Corals and algae compete for the same basic nutrients, so if there is open space algae will try and grow on it.

While keeping nutrients within typical reef keeping parameters can help somewhat and is desirable, it's not the end-all solution (many algae can and do grow on the most pristine reefs with very low nutrients, but they are cropped continuously by grazers and so not visible to the casual observer). Some of the most effective steps to reduce algae in the reef aquarium:

1. Maintain a varied assortment of herbivores (fish, snails, hermits, etc.).
2. Fill up free space with coral and encourage coralline algae to grow (most alga typically will not grow directly on healthy coral or coralline algae,).

If algae are allowed to flourish they can physically irritate corals and they have ways to create conditions that can kill nearby coral tissue...allowing them to colonize the newly created real estate.

 

[ScottB]

+1 to @Nano sapiens

At 9 months it is not uncommon to get some wire or turf going. Especially on a dead rock start. Actually I am going to guess you had (some?) live rock at least if the sailing was so smooth.

Get a good variety of snails going and an algae or starry blenny.

 

[Dkmoo]

The red is coralline (good), the green could be any number of turf algae species (can outcompete other life forms under the right conditions).

Corals and algae compete for the same basic nutrients, so if there is open space algae will try and grow on it.

While keeping nutrients within typical reef keeping parameters can help somewhat and is desirable, it's not the end-all solution (many algae can and do grow on the most pristine reefs with very low nutrients, but they are cropped continuously by grazers and so not visible to the casual observer). Some of the most effective steps to reduce algae in the reef aquarium:

1. Maintain a varied assortment of herbivores (fish, snails, hermits, etc.).
2. Fill up free space with coral and encourage coralline algae to grow (most alga typically will not grow directly on healthy coral or coralline algae,).

If algae are allowed to flourish they can physically irritate corals and they have ways to create conditions that can kill nearby coral tissue...allowing them to colonize the newly created real estate.

+1 cannot overstate how important this is. Many hobbyist believe that no3 and po4 are somehow the key to control algae (i blame all the youtube and forum posts regurgitating information from 10 years ago).

The secret sauce is what was posted above. "Nutrient control" by itself is not effective for algae management