cycle with guppies

Depends upon what size tank you were looking at. Either using fish and doing a fishless cycling can take about the same amount of time--that said, why put fish under that kind of stress?
 
Guppys are fragile little fish and they probably wouldn't make it through the cycle, platys and danio's are a hardy fish if you want to cycle the tank with fish.
 
Hi cluster....

Just use some gravel/deco from your other tanks aswell as some cultured filter media and you shouldn't even have to worry about using guppies or fishless cycle.
 

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