Hey guys, I started my first tank in the beginning of March and have been battling multiple algaes since april. Think I finally killed off all the rhizoclonium, bought a UV sterilizer for any future green water flare ups and am now think I am fighting diatoms(?) and green dust algae. My plants are doing better than before but are still really stringy and my ludwigia is growing like crazy but has leaf melt near the base. My tank is 18" tall and I am running a Ray II on an 8 hour cycle with my drop checker yellow for co2. Dose daily EI and dose iron. My readings 6.6, 0, 0, 80ppm. So I know my nitrates are high. Don't know how to test for silicates. No livestock in tank. Any advice would be appreciated. Should I add more plants? Also, the ludwigia in picture 2, is that 'red' and if so why is it green?