[uMc]

Can i dose seachem flourish comp together with DIY liquid NPK?
Macros:
N- 7.5ppm
P- 1.3ppm
K- 4.27ppm

the only thing i know of my water is
nitrate about 20-40
pH 7.6
ammonia 0
eco-complete sub

10g tank with 18" Sat+ light. i have few low light plants and a lace java fern.. i started dosing flourish 2 weeks but this fern doesn't look good other plants are fine. i don't have the picture of it right now. i'll update
I know lace java fern is a low light and easy plant but i don't know why the leaf look like dying

Thanks

 

[uMc]

what's wrong with my lace java fern? i have been dosing flourish comp and excel since last 2 weeks but it doesn't get better. i have another lace java fern in a bigger tank and use the same source of tap water and dose the same ferts but this fern grow great, bigger and longer leaves