Nano having algae problems

[Tofu Brady]

I’ve had my 20 gallon nano for around a year now I have 2 clowns 1 firefish 1 gramma my rock is covered with algae and i added the coraline in a bottle in October I started with live sand and dry rock and i haven’t seen any blooms in it I have 5 softies 4 lps 1 sps what is wrong I do weekly 20% water changes and I’ve had the problem for around 7 months what is wrong please help am I doing something wrong

 

[glb]

I’ve had my 20 gallon nano for around a year now I have 2 clowns 1 firefish 1 gramma my rock is covered with algae and i added the coraline in a bottle in October I started with live sand and dry rock and i haven’t seen any blooms in it I have 5 softies 4 lps 1 sps what is wrong I do weekly 20% water changes and I’ve had the problem for around 7 months what is wrong please help am I doing something wrong

What are your tank parameters? Nitrates, phosphates, alk, ca, temp, etc.

 

[Tofu Brady]

What are your tank parameters? Nitrates, phosphates, alk, ca, temp, etc.

My temperature is 80 to 81 my alk is normally 7-8 calcium is normally 480-520 I know it swing bad my corals are fine though nitrate are bellow 5

 

[glb]

My temperature is 80 to 81 my alk is normally 7-8 calcium is normally 480-520 I know it swing bad my corals are fine though nitrate are bellow 5

The temp is a little high. How are your phosphates?

 

[Gedxin]

Also what CUC do you have? What's your lighting schedule? Pics?

 

[fushi]

I’ve had my 20 gallon nano for around a year now I have 2 clowns 1 firefish 1 gramma my rock is covered with algae and i added the coraline in a bottle in October I started with live sand and dry rock and i haven’t seen any blooms in it I have 5 softies 4 lps 1 sps what is wrong I do weekly 20% water changes and I’ve had the problem for around 7 months what is wrong please help am I doing something wrong

Any pictures you can share?

and a algae eating blenny and some snails might be useful.

https://www.reefcleaners.org