My Algae Issue

Tomáš Rejmont

New Member
Apr 14, 2020
Hi, please could you help me to reduce algae.

I am fighting with algae more than 2 years. I have lot of algae on my background.

Aquarium: 160x55x50 cm, I use PH controller to keep pH. I had a BBA, I switched off pH controller during the night, now when I keep running controller whole day and night, Black algae disappear and I have mainly green algae. Could you advice how to get rid of this algae?

I have 12 discuss fish and 20 neon tetras.

I have a lot of PO4 in tap water. I use rowaphos in filter to redue PO4.

I have two filtres Eheim 3 2075 and Fluval 204 with biomedia inside + szat clear water.

CO2 reactor - aqua medic reactor 1000.

Light: Aquatlantis Easy LED 1450 mm, 72 W freshwater, 10 hours lighting, maximum capacity (95%) only 4 hours a day.

I dose only tenso coctail, the other nutrients are from waste.

Water change 80- 120l weekly

water parametres:

NO3 (mg/l) 33
NO2 (mg/l) 0
Fe 0,3
PO4 1,84
K 31,3
pH 6,35
UT dkH 2,3
TDS 260
CT dGH 15
CO2 31
Mg 2
Ca 34