ludwigia peruenis

So I'm a little stumped on how to correct what I think is a nutrient deficiency in my ludwigia glandulosa palustris. Tank parameters are: 40 gal breeder, fluval plant 2.0 & finnex planted+ 24/7, Pressurized CO2 with modified griggs reactor GH 8, KH 4, pH 6-6.6, 50% water changes weekly Dosing...

Peacock Moss $8.00 per golfball or $20 shipped for 3 golfballs! (add $6 per additional) Anubias Nana 'Petite' (ALL PLANTS ARE PENDING) Growing surprisingly quick! Gotta thin out the family. Normally $5 each take them for $3.50 each Will come with 5-7 leaves per rhizome (12-15...