I'll start with my stats: Tank: 120L Approx. / 32USG / 27 UKG (60cmL X 40cmD X 60cmH) Filter: Juwel Internal Filter 600lph, Fluval 104 480lph. Lighting: 2 x 24W Juwel T5HOs. CO2: None. Substrate: 2cm Tetraplant Complete Substrate, 1cm Pea Gravel, 4cm Argos Playsand. Fertilisers: KN03, KH2PO4 and Trace solutions. 25ml of KN03 + KH2PO4 on one day and 25ml of trace on the other. 2.5ml of Easycarbo per day. Lately, ever since I started dosing ferts some of my plants have started getting yellow specks. Notably these are Cryptocoryne wendtii and Echinodorus tenellus, both in the foreground. Both plants seem to to have yellow specks on them which I think are getting worse, I do not know why! Also some (not many) of my Hygrophila Polysperma leaves have turned yellow and rotted. I'm not sure why this is happening .