evonner Posted December 6, 2022 Share Posted December 6, 2022 My tank went through a 6 month shock of, not by my choice, of unattendance. I returned to the water mostly evaporated, my plants dead and decayed. Two fish had died, no one removed them. One guppy survived this ordeal and I'm pretty sure I know why. I chose to salvage the tank instead of restarting. Now, I have a major case of diatom algae that I'm losing the war on. I have read and watched everything and I just don't know where to start. I have a variety of plants, most are showing signs of a potassium deficiency and possibly nitrogen and phosphate but I'm not sure. I do weekly water changes to remove some of the algae and clean the plants leaves. My lights are on a timer and I've cut back on feeding my guppies do they will graze on the algae. My water parameters are pretty consistent but I'm going to lose my plants if I can't figure out exactly how to balance this problem. I also have a piece of driftwood with an Anubias attached to it. The wood has a thick black slimy icky of something, maybe blackbeard? Here is some starter information: water tests, pH 8.2, ammonia/nitrates 0, nitrates 20, phosphate 1 ppm. 11 to 12 dGH and 7 to 8 dKH. Using co-op root tabs and Easy green all in one fertilizer. My tap water is pH 7.2, nitrates 5, phosphate 1, dGH 12, dKH 9. I look at this and wonder what is happening and not happening when I do a water change of 30%. I know there is much more info needed but I will start with this. I will attach some photos. This was the condition of my tank August 2, 2022. 1 Link to comment Share on other sites More sharing options...
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