15#ceramistpalace 7 v! e! U1 {! m, m0 a* G9 y5 q3 e6 F$ K* w" E
( y8 Y m# i$ n+ r/ | R+ RMy husband seals the plastic layers himself, then use a small fan to blow air between the two layers. The plastic can only be bought at Horticulture supply stores.