Here's a summary: Currently treating ICK with meds, therefore no filters are in the tank. Only 2 gouramis, 1 black mollies, 1 pleco in tank. Just did a 30-40% water change. pH 8.0 Ammonia 0.0 Nitrite 0.0 Nitrate 10 29 gallon,gravel substrate, plastic plants. My fish seem fine but I just now realized how to test for nitrates and came up with this reading of 10. Should I be worried about the nitrates currently?