The Skyport 30 gallon system REQUIRES vented caps. Unvented caps are not approved and MUST NOT be used!!! You mentioned 9 gallon tanks in your original e-mail. The Skyport system utilizes 15 gallon tanks.
John Cooper, A&P Skyport Services PO Box 249 4996 Delaware Tnpk Rensselaerville, NY 12147 518 797-3064 Fax 518 797-3865 www.skyportservices.net _____
