cant remember which but one of those makes a unit that sits outside cage and pumps fog through a hose==it works awesome i have on my emerald and i just turn on for few min fills cage with fog, could run timer to turn on periodically it comes with 1 liter water holding bottle but i think a 2 liter pop bottle would fit so would last quite some time..you cant run it continuous though hence need for timer if away
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GOOSEBALLS

lamina1982@hotmail.com