RaZias Posted February 14, 2013 Share Posted February 14, 2013 I have 140 L tank (80cm x 60cm x 41cm) and I will have 15 adult hissers. How many holes I should use for ventilation ? I don´t want a big opening because of the smell (hygine)...I am preparing a dual thin hose system that will be connected to a ventilation opening on the the top of my balcony´s door. The hose will have a net protection to avoid the escaping of small hissers. How small will have to be the net to avoid the escape ? Quote Link to comment Share on other sites More sharing options...
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