Does the algae kill my coral?

[tri989]

My tank have bloom algae like the picture below which are brown have oxigen bubble.
My no3 is high ( 10-25 salifert) po4 is undetect (hanna test kit). What do i need to do now? My tank have 70 days.

 

[Jamie Allbritton]

Water changes to start out, then find the source of the high nutrients, which could be too much feeding, or water quality, ect.

 

[Frtdrmrose7]

Are you using RODI water? How long has the tank been running?

 

[crny1]

If you are going to do water changes use a small tube (rigid airline works best) to siphon out the algea off everything. Increase flow while you are at it. Kinda looks like diatoms from the pictures. Water changes dont do a lot for nutrient export, reduce feedings and light schedule. If you have a fuge run the lights on it opposite the DT lights. Paitence. It will die off if you are diligant with reducing feeding, light schedule and sucking it out with a tube when doing water changes. Also make sure your water is 0 TDS

 

[tri989]

If you are going to do water changes use a small tube (rigid airline works best) to siphon out the algea off everything. Increase flow while you are at it. Kinda looks like diatoms from the pictures. Water changes dont do a lot for nutrient export, reduce feedings and light schedule. If you have a fuge run the lights on it opposite the DT lights. Paitence. It will die off if you are diligant with reducing feeding, light schedule and sucking it out with a tube when doing water changes. Also make sure your water is 0 TDS

I use rodi but my tds is 10. Are u sure that is diatom?
Thanks for your help

 

[Supurderek]

Yes tds bad. You need to change filters ASAP. Looks like diatoms. What is your lighting schedule?

 

[tri989]

Yes tds bad. You need to change filters ASAP. Looks like diatoms. What is your lighting schedule?

I use radion sps ab+ radion program from 9h 21h.

 

[Supurderek]

What percent?

 

[tri989]

What percent?

100% intense like the defaut setting. what should i do now.

 

[Supurderek]

For what you have, you only need around 40-50%. Time is fine. Just move the bar on the left side. Change water filters and it honor recede. If you move to hard corals, you can bump up lighting higher. If your tank is fairly deep, you can also raise the percentage 10% or so to reach the bottom.