One more thing you could dink with...add an easy fill plug in top.
I used a large(~2") rubber stopper with a small hole for 'vacuum vent'.
Large funnel works good for anti-perch top, just set it on top.
I used a large(~2") rubber stopper with a small hole for 'vacuum vent'.
Large funnel works good for anti-perch top, just set it on top.