Hi friends. My tank is infected with cyanobacteria and I dont know the cause.
I make 50% water change 4 days back
water temp 27-30C (extremes)
old spiral bulbs 9 months old
I use Excel overdose
I have CO2
I use Cycle (the tank was alredy cicle but I add Cycle after that)
The substrate is 2 weeks old Eco complete
Plants healty, I use flourish
The only algae is cyanobacteria
I wonder what is causing cyano.
