Purple and teal algae?

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Biglog

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Iā€™m starting to get green algae and just noticed this bright teal and purple algae in the sand. Does anyone know what this is and how to get rid of it?
 

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Hi, the bluer looking algae appears to be Cyanobacteria, which is commonly called blue green-algae. Iā€™m not sure what the purple algae is
You are getting a fair bit of algae in your tank. How long do you have the lights on for? Does the tank get any direct sunlight? Do you know what your water parameters are?

Most algae is the result of too much light and/or high levels of nutrients in the water.
 
The lights were on for 12 hours but I turned them down to 10. All the water parameters were good ( 7.8pH 0 0 10)
 
I would reduce the lighting further, to no more than 8 hours, and do a few extra partial water changes. An old credit card, or something similar, is great for scraping algae off the glass directly before a partial water change.
 
The green spots on the glass is just normal green algae.

The dark green and purple patches on the sand and on the glass under the sand is Cyanobacter bacteria (blue green algae). It comes in a range of colours including blue, green, red, pink, purple, black and brown. Use a gravel cleaner and suck it out when you see it. And reduce the amount of dry food going into the tank.
 
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The green spots on the glass is just normal green algae.

The dark green and purple patches on the sand and on the glass under the sand is Cyanobacter bacteria (blue green algae). It comes in a range of colours including blue, green, red, pink, purple, black and red. Use a gravel cleaner and suck it out when you see it. And reduce the amount of dry food going into the tank.
that is some very fancy pink cyano!!!!
is it because of the light perhaps?
 
Old fluorescent lights or lights that produce lots of red light can encourage it. If you have fluorescent globes above the tank, they should be replaced every year, as should the fluorescent starter. Use globes with a 6500K (K is for Kelvin) rating.

If you have LED lights, get a light unit with 6500K LEDs. LEDs do not need to be replaced like normal fluorescent globes do, and LEDs will last for years.

The most common cause is excess nutrients and too much dry food in the tank.
 

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