Mini nana leaves rotting

[octopus]

The nana which is in a 2ft tank with lapis sand and pressurised co2 appear to have some of the leaves rotting. Both older leaves as well as younger leaves have this problem (photo attached). Details of the tank set up :

2ft fan cooled tank
temp bet 28 to 30C
Base filled with 3inch of lapis sand.
Light : clip on 11watts light
Flora : mini fissiden and Nana
Fauna : 2x guppies
Lights and CO2 : 8 Hrs/day.
co2 indicator : dark green

Please advise

[dc88]

Do you add fertilizer ?

[unpluggedmusic]

This is a temperature problem, most of the time. I have lots of nana and mini nana. When temperature is abt 26degrees or lower, it stays green. In LFS's display tanks without chillers, the nana is the same as yours. My suggestion is to hide your nana in shades, and as place them as low in your tank as possible away from strong light.

[apisto31]

The condition of the other nana is not that bad. judging from the photo. Is there any healthy new growth or all are having like a leaf burn?
I had plenty of nana before, some suffered from similar condition but able to bounce back. I notice that it was potentially due to nutrients deficiency since those with leaf burn / yellowish leaves are the ones in the bare bottom tank with no fert dosing and managed to bounced back after transferring to another tank with ADA soil.

[Shadow]

Did you buy the plant from LFS? because nana at LFS is grow emerge.

11W for 2ft tank is way too low.

[octopus]

Did you buy the plant from LFS? because nana at LFS is grow emerge.

11W for 2ft tank is way too low.

Actually with me for more than a year. Never had this issue. Initially it was in another 3ft tank with plenty of livestocks. Decided to transfer to 2ft as the spot algae problem was getting out of control. But never had rotting leaves. But now after transfer to 2ft tank no spot algae problem but have rotting leaves. It has been in the 2ft tank for about 2 months. The notable difference between the old and new tank is stated below. I dont know if that has anything to do with it. By the way i thought Nana are better off with lower lighting.

Previous : many lifestocks and 4 x 39watts lighting, Cannister filter
Present : 1 guppy, 11 watts lghting, Sponge filter.
Water changing frequecy weekly for both set up

[Shadow]

they can grow in low light but not too low, 2ft low tech normally 24W-36W

[ralliart12]

...11W for 2ft tank is way too low.

Actually, will the leaves of giant nana get burnt from too much light?

[morning breakfast eat]

Not too sure about that but my giant nana leave had rotting problem before. I suspect its a lfs emerge vs my submerged problem. From 6-7 leaves rot until left 2. then the rotting stopped and started new growth..

[Shadow]

Actually, will the leaves of giant nana get burnt from too much light?

nope will not, but will get green spot algae instead

[Shadow]

Not too sure about that but my giant nana leave had rotting problem before. I suspect its a lfs emerge vs my submerged problem. From 6-7 leaves rot until left 2. then the rotting stopped and started new growth..

that is true all the nana and fern from LFS are normally grown emerge

[octopus]

The%2pnana which is in a 2ft tank with lapis sand and pressurised co2 appear to have some of the leaves rotting. Both older leaves as well as younger leaves have this problem (photo attached). Details of the tank set up :

2ft fan cooled tank
temp bet 28 to 30C
Base filled with 3inch of lapis sand.
Light : clip on 11watts light
Flora : mini fissiden and Nana
Fauna : 2x guppies
Lights and CO2 : 8 Hrs/day.
co2 indicator : dark green

Please advise

Thanks for all your participation. Surprisingly rotting has stopped even though there was no change in parameters or condition. The Plant has been rot-free for the past 2weeks.