Phosphate free fish food?

[njparton]

Even though I use RO water with <1mg/l PO4, the levels in my tank are still >5 mg/l with associated algae problems (although ottos do help ). I've put this down to the PO4 levels in dried fish food.

Does anyone know of any PO4 free fish food to help keep levels down?

 

[thecichlidaddict]

if food is contributing then you are overfeeding. How much/how often do you feed?

 

[njparton]

if food is contributing then you are overfeeding. How much/how often do you feed?

Not necessarily as most dry food contains quite high PO4 levels as it's not poisonous.

I feed once a day and it's all gone in under 4 mins.