Anyone knows why frogbits and water lettues roots keep dropping off?

[HeMan]

Hi

I would like to know if anyone do this issue, i got lots of floating plants mini lettues and frogbits, they are there to suck up the nitrates in my tank.

But the problem is the nitrates wont even decrease and the plants roots became soft and drop off by its own, initially i got from some kind bros theses plants they have longs and dense roots , after i put them in my tank for a week , all the roots kept dropping.

Do you know why?

Tank specs:

2feet shrimp tank
Benibachi soil
24degree
Ammonia 0 , Nitrite 0, Nitrate 25, ph 6.3-6.5, kh 2 ,gh 4
Lighting: 2x 24 T5 Aquazonic 12000k per tube
( lights off during weekdays when im at work only on for 2 hours at night, weekends 10 hours)

[eviltrain]

get a timer. on 6-8 hours each day. . .

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[alvinchan80]

Your lighting routine is not very correct for plants even..

[HeMan]

Thanks bro , so you think is due to insufficient lights?

[eviltrain]

light enough.its the period. . .

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[HeMan]

I see , thanks alot both bros.