I checked my chemicals in the water and I ran across a problem and need some explanation. I dont remember the exactly but i can guess close. Here are my aquarium info.

Ive been having the tank for about 2-3 months. but i just now started using the test strip just to see if i had any problems. I have never had any fish die on me. But the ph and the alkalinity are both high.

10g Tank
Penguin bio-wheel 150
Marineland water heater
4 Platy's and 3 neon fish
gravel
many many live plants. (java ferns, anubias nanas, lots of water sprite)

Nitrate - 0.5
Nitrite - 0
Hardness - 50 ppm
Alkaline - HIGH i dont know the value but i just know the yellow test strip turned blue.
pH - also high i think 8.5

ANY SUGGESTIONS?

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20 Gallon Planted Tank
3.45wpg, Eco-Complete substrate, 6500k CFL, Pressurized CO2, Flourish Excel, Flourish Trace, and Flourish
Platys, Oto Cats, Bumble Bee Shrimp, Crystal Red Shrimp and Red Cherry Shrimp
Limnophila Aromatica
Stargrass
Red Wendtii Cryptocoryne
Dwarf Hair Grass
Baby Tears (HM)
Dwarf Baby Tears (HC)
Red Lotus Tiger Lily
Red Lotus Dwarf Lily
Java Moss
Christmas Moss