water doesn't rise enough

[J. Wright]

Parts received. One problem though. The water level when the pump is on doesn't even rise enough to overflow. It only reaches about have way up the 2L bottle. I'm using an 80gph pump with 15gal. resvoir filled about halve way. I guessing it is a result of loss of pressure but since no leaks were found could it be the pump is too small. If so could I drop another 75gal. pump in and use a "T" to connect the two. Please let me know what you think.

J. Wright

[Ron]

Yes that sounds like your problem. You can double up on the pumps. Some pumps are weak so a 120 GPH or up would be better for the 11 plant garden.