2:0 makes no sense...do you mean 2:1?...All the same...its better to supplement calcium withOUT phosphorous as they are already getting plenty of it in their food...and even giving them a dust with a 2:1 ratio they may still have an imbalance because of the poor ratio in the actual food source.
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Christina

Leopard Gecko Morph Descriptions
2.3 leos
-0.1 tangerine het rainwater albino w/jungle background (Blinkers)
-0.2 jungles (Vahz & Skissor)
-1.0 tremper albino (Spitfire)
-1.0 tangerine rainwater albino (Bronx)
-ignorance is not to be punished when one is trying to gain knowledge...what scares me is the vast number of people who, when given the information to gain knowledge, choose to ignore it.