ok. so you can try planting your tank if you have good lighting. that makes the tank look good too. Indian fern is an attractive plant that absorbs nutrient through the roots, as do some others.
failing which get some phoszorb - remember to activate it. you have to fill water in the container it comes in and close the lid with the pouch in it, for about 10 minutes. it is an exothermic reaction so the container will become quite hot.
then you take the pouch out, remove the excess debris and put it in your filter.
if you are 100% sure that its the phosphate that is causing the algae bloom this is one way to fix the problem. I prefer the plant method. phosphates in my tank were about 50-80ppm and i did not have a shred of algae.
if the problem is caused because of another nutrient imbalance, then bio chem-zorb may help. I personally don't use either as I have not needed it.