you lights are too high to call your setup a low light tank, you should start to dose Excel. yellowing of plant indicate lack of nitrate or Iron, in most cases Nitrate. holes indicate lack of potassium, are you dosing any fertilizer??Hello!
I can't keep java fern alive to save my life.
My ferns always acquire necrotic spots and sometimes turn yellow.
I plan on starting with potassium to try and help and was wondering what a target K ppm would be for a low light tank not injected with co2.
I have two t5no bulbs on top of my 55 g 21 or so in high tank. I believe I run my lights for 8 hrs with a 4 hr siesta.
Any thoughts would be nice.
there is no real number for how much potassium you should add, plant can handle the high potassium very well. if i have to give you numbers, i would say 20-30ppm total.