Evening all, I have recently decided to get rid of the plastic plants are try for a more authentic looking tank. 200L tank had it for a few years, fish are all still alive. (its overstocked so im trying to get rid of some of the fish) Co2 via inline diffuser (on 3 to 4hrs before lights, off 2hrs before lights out. Spraybar + pump for water circulation TNC complete 20ml 3x a week, every other day. TNC plugs in sandy substrate fresh and plant 2 led light for 8hrs air stone for o2 during lights out Issues: Poor plant growth for some plants small/moderate amount of green algae on glass only small amount of brown algae frogtbit dying/yellowing (see picture. Pleco damage?) Fish: Fire eel Ghost knife fish Two bala sharks Raph catfish 2 small bristlenose plecs So onto the plants: Ludwigia sp red (doing ok, green leaves turning slightly brown but strong reds and some growth, not a lot) Helanthium tenellum (struggled a lot with lots of yellowing and clear see-through growth. Some strong bright greens now though after dosing more ferts) Java fern (had some see-through new growth but probably doing better than most plants) Vallisnerias Spiralis (some see-through growth, yellowed to start but showing strong greens now) Saggitaria + a cryptocoryne (cant remember the names. They're doing ok, some yellowing in a few plants. Seem to be attracting the most of the brown algae) Amazon frogbit (good initial growth, now yellowing and odd holes. see picture) Dwarf hair grass (new, yellowing and some possible signs of new growth) Water changes have been frequent but with 2 young children and a busy job it can get delayed but not by much. Once a week minimum, usually twice. Nitrates hover around 15-30 Amm, nitrite always 0 PH is unfortunately 8-9. Lowest i've measured is 8. (now tested with a digital tester. 7.3 at lights out) co2 dropper very light green. GH/KH 180/150 Temp is consistent in the 23-24ish range. Thanks in advance.