I have an AQ for almost 6 months and have of course started with basic fertilizer, then added liquid fertilizer in the amount specified by the manufacturer. Conclusion: the algae grew ...... While the algae control I have a lot of research on the internet and came up with the importance of CO2 fertilization. In many chats of EasyCarbo fertilizer was praised as a miracle cure, and for 4 weeks I now use it so well (1 ml to 50 liters of water!) With simultaneous reduction of liquid fertilizer at 25% of the manufacturer's specified amount and lo and behold, just after a few days the plants were visible green and now also much more stable. Growth has accelerated in fact, but not as described in the chat explosively. What I also like is that preserving the lower leaves at stem plants and die not slow when the water surface is achieved. All in all simply recommended ..... and I have not even algae.