Hi all, I've had my tank setup now for about 8 months and have always had algae problems. I started off with a very simple setup which has developed as I've learnt more. I'm hoping that you can point me in the right direction with my current algae issues. Tank: Juwel Rio 125 litre Filtration: Internal Juwel 600lph and TetraTec EX700 external (added this week) Temperature: Approx. 24 Celsius Lighting: 2 x 18w T8 on between 14.00 and 22.00. Tank is close to window receiving morning sunlight which can shineon tank. Substrate: Tropica Plant Substrate capped with sand Fertilisers: Tropica Plant Nutrition+ 3ml 5 times a week Plants: Reasonable level of planting with Amazon swords, Elodea Densa, Hygrophila Polysperma, Cabomba, Ambulia Aquatica, Crypt Lingua. Fish: 2 Angel, 2 Neon Rainbow, 2 Red Platy, 1 Neon Swordtail, 5 Neon Tetra, 5 Lemon Tetra and some Corys to come. Water stats this week are pH 6.6 and Ammonia/Nitrite/Nitrate 0ppm. pH has recently dropped after changing substrate from pea gravel. Used to sit at 7.8. I've included some photos of the tank and algae below. I believe I have Green Spot, Green Dust and Black Beard algae although I may be wrong. Any ideas on where I'm going wrong?