Automatic Feeder

for the 55 i'd go with the eheim. i love mine.

the 20 might be a little more difficult because they seem to overfeed on smaller tanks. i still use the penn plax daily double on my smaller tank though. it's very simple in design. sometimes the little tabs break off but unless you break all 3 it performs the same.
 
for the 55 i'd go with the eheim. i love mine.

the 20 might be a little more difficult because they seem to overfeed on smaller tanks. i still use the penn plax daily double on my smaller tank though. it's very simple in design. sometimes the little tabs break off but unless you break all 3 it performs the same.

i took my daily double back to the store. very disapointed with its design. aloud moisture to go into food and would clog system. that means no food for fish. :yuck:
 
Humidity is one issue with ant auto feder Ive tried which caused clogging/fungus/mold of food. Try raising few inches above the lid thus minimizing humidity accumulation on food.
 
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