Once to Twice (I think) 
 
Our other thing, is Dad siliconed some netting and these bouy type things to the back to give it a "under water" impression, could that be it? 
 
It has a heater, a fluval filter, some driftwood, gravel, plants, a boat ornament, a cave that lights up. 
 
2x angels 
15 or some-thing neons 
2x male guppys 
4-5 corys 
 
and thats about it!