Is this considered as nutrient deficiency?

**Patrick76** · 30th Jan 2013, 11:10

I am having a 14 litres cube tank which was setup 2-3 weeks ago. I dosed in about 21 ppm of NO3, 1 ppm of P and 21 ppm of K weekly. Tank temperature is maintained around 21-22 deg C as this tank is in my office with air con on most of the time.

My nana started to turn pale. Picture below...

IMG_0074_zps8c4f0016.jpg

The rest of the plants are doing fine.

I am just wondering if it could be due to a change in environment. As when I bought it, it was packed in a bag without water and now it becomes submerged.

**milk_vanilla** · 30th Jan 2013, 11:32

i believe you attached the nana into the wood ?

How long it's been in submerge environment ?

in that case, probably transition between emerged to sub. Anubias is not light & ferts hunger.

**barmby** · 30th Jan 2013, 12:30

Too much light Too much nutrients might an issue to nana. They grow better when sheltered from direct sun or MH light or strong light for that matter.

**Urban Aquaria** · 30th Jan 2013, 12:39

Maybe the leaves were already weakened from the start... you should just cut off those affected leaves, it'll help spur the growth of new healthy leaves (will take some time though).

**Patrick76** · 30th Jan 2013, 16:53

I am only having a 7W light over the tank.

It has been submerged for 2 weeks.

**mincedmeat** · 30th Jan 2013, 17:20

Trim the leaf off and let new shoots grow.

**blue33** · 31st Jan 2013, 13:35

Sure or not??? Light yes and no!

Possible cause of the plant:
1) Potassium deficiency, glassy plant seen on the photo.
2) Too little fertilizer and over-fertilization with Phosphate.
3) Well fertilized aquariums it can be caused by an overly high amount of total Carbonate hardness in conjunction with a pH over 7.

my 0.00002cts opinion.

Originally Posted by barmby

Too much light Too much nutrients might an issue to nana. They grow better when sheltered from direct sun or MH light or strong light for that matter.

**Patrick76** · 4th Feb 2013, 08:04

The tank starts to develop brown algae on the glass especially on the silicone. Does this means anything?

**blue33** · 4th Feb 2013, 10:17

This is cause by new tank syndrome, change water more frequently.

**Urban Aquaria** · 4th Feb 2013, 13:29

Originally Posted by Patrick76

The tank starts to develop brown algae on the glass especially on the silicone. Does this means anything?

Sounds like diatoms... they are usually present in lower light conditions or new tanks. They are soft and slimy in texture, so you can clean them away quite easily.

Btw, otocinclus (aka otos) love to eat diatoms, i've been cultivating those type of algae in glass jars to feed them too.