Review on 🐠 Seapora 56098 Overflow Pre-Filter: Enhance Aquarium Filtration Efficiencies by Olga Porter

Received this recently and found that the center channel on the rim of the tank, which is also part of the bolts that the skimmer attaches to, was completely broken. One of the pre-filter sponges had lumps on the bottom and top. I have 1 air hose. I had to get 2 riser assemblies which were PVC pipe with an air hose attached to the inside of the PVC pipe and extending 2 inches beyond the PVC pipe. They fit into the 1 inch spacers on both bulkheads and as the air lines are above the waterline they provide the air needed to feed the fill water. This is a return.