high Alkinety and low Cal

[Frogger]

All your organisms within your tank use the ca and the carbonate at a fixed rate.

Before you try to fix something you need to find out why your alkalinity and calcium have gotten out of wack. What method have you been using to add alkalinity and calcium to your tank? What is your magnesium level?

Are you sure you are getting the right readings from your test kits?