What's going on? Growth stopped?
Unfortunatly this has to be my first post. I started my first planted tank about 6 months ago. Its a 29gal tank with 55watt CF light for 7.5 hours. I started with 2 DIY co2 setups going to a power head. An AC 110 power filter and EcoComplete. I've been using the EI for dosing. Everything had been going great for the first 5 months, tons of growth, pearling a little bit of algae but nothing terrible. The past month though has been tough, nothing has changed routine wise. I did add another DIY co2 and hooked up all 3 to the power head. But I modified the power head and made a vortex. This is when all the trouble started. My pH dropped to 6.8, Ok good a bit more consistancey but the plant growth in the tank stopped, and the algae took off! And its been this way for about 3 weeks now. I took the vortex off and the pH returned to the normal 7.2 but the algae is still growing and the plant growth has all but stopped. I used to get about 1/2"-3/4" in a few days, now I've seen only about 1/4" in a bit over a week. Tests: amonia 0, nitrite 0, Nitrate 60, ph 7.2 What happend? Oh if it makes a difference the plants are, rotatla indica, ludwigia repens, micro sword and anubias cofferi(sp). Thank you for any help!!