New growth stunted.. Calcium deficiency?

[obida0429]

Hey Guys I need your advice I did a little research and I think its a calcium deficiency but what do you guys think? Its showing up on my Hygro plant so far.

I only dose excel and potassium

http://www.aquaticcommunity.com/fishpictures/data/500/thumbs/IMG_20121002_164717.jpg (http://www.aquaticcommunity.com/fishpictures/showphoto.php?photo=22975)http://www.aquaticcommunity.com/fishpictures/data/500/thumbs/IMG_20121002_164701.jpg (http://www.aquaticcommunity.com/fishpictures/showphoto.php?photo=22974)

[homemadepopcorn]

Have you tested your calcium levels?

Its hard to say given that we don't have any quantitative information.

[korith]

Too many variables, might not be calcium. What size is the tank? What type of light fixture/bulbs do you have on the tank? How long do you leave the lights on for? What is the substrate? What is your fertilizer regimen? How long has the hygro been in the tank? Every plant seems to vary in how much time it'll take for it to adjust to a new environment. I sometimes get plants that look like they are going through a dying process for a few weeks before finally establishing themselves in the tank and flourishing.