Red Melon Sword, Sick or old?

[fish_4_all]

Ph - 7.2
NH3 - 0
NO2 - 0
NO3 - 10ppm
PH4 - 1 ppm
KH - 150
GH - 200 ish, hard to read accurately
Passive CO2, about 21ppm

Dose MgSO4 and K2SO4 every other day
Dose CSM+B to .2ppm iron on other days about 2tsp
Dose KNO3 and KH2PO4 when needed to 20 and 2 ppm
Lighing is 80 watts no flourescent over 2, 10 gallon tanks

I always have some green spot alage but the BN keep that in control. The new leaves look great. Only the lowest and oldest leaves, 3-5 weeks old show this problem. No real holes through the leaves but they look brownish and maybe a little thin.

Is this just the BN making the leaves look bad from rasping, the leaves just being old or is there something I need to fix?

 

[Wizzard~Of~Ozz]

I noticed you have resin rocks.. I added a couple roottabs (Seachem, tho there are other brands.) help out my sword with growth. They are very heavy root feeders

 

[fish_4_all]

It is mixed resin and small grain river rock. I thought it might be a nutrient deficiency but i never thought about root tabs. I will get them as my crypt wendtii act like they could use them also.

The only problem is I don't know if I want the red melon sword to grow any faster than it is right now. Maybe I will get it good and healthy and trade it to someone for a smaller sword or something else.