Need advice with the following 10g tank
Hi guys, I have been lurking the forums for quite some time now and I would appreciate it if you give me advice with my tank questions.
Plants : It is a 10G tank with glossostigma, hairgrass and baby tears.
Fish : Some amanos, guppies and neons.
Substrate: Carib Sea + Ada amazonia
Light: 2x CFL light bulbs keeping them on for 6 hours . Now here I am not exactly sure how much the lights output is. My friend who gave me the tank and the lights said they are 4-5 Watts each which if true means they are a little low for this tank. But from googling them I am finding they are actually 13.5 Watts each. I am not sure who to believe.
CO2 : Fluval mini CO2
Filter: Eheim 2211
Fertilization: I am doing the EI fertilization with KNO3, KH2PO4, K2SO4 and Plantex 3xweek with the dosing requirements for 10G tank.
My problem: The plants are slowly dying. I also have algae problems. The plants slowly turn very dark green and have algae strings on them , very few new leafs can be seen growing and after they grow they also turn dark. The glass of the tank doesn't have the light green algae that can be seen from high light, but rather dark and orange kind of algae that I need to remove every few days in order to keep it clean. The aquarium is not very near a window, but the room where it is is kind of sunny with an Eastern / Southern windows so I wonder if the light from the outside makes the algae problem.
I have measured the following characteristics of the water:
Phosphates: 2-2.5 ppm - this is in the middle of a fertilization cycle
NO3: around 9-10 also in the middle of the cycle
Any suggestions what the problem might be can be helpful. For now my only unknown is the lighting. It "seems" that the light is ok. I think it is lower than optimal but if it is lower why I have so much algae problems ?
Thank you very much!