I had to look up what the zerolite was and then felt really dumb LOL ... Ammochips duh LOL. I am familar with those. How many pounds do you think you are using in the two bags? The inside pond they would go into is about the same size as yours, but I think your filtration set up may be better. We finally got a couple of 55 gallon barrels, but hubby hasnt had the time to set those up yet.
Will describe what is CURRENTLY running, can you tell me what else we may need to do to handle the load. Hubby has told me what he wants to add, but sometimes he loses me in his explaination, or budget is an issue, and I dont want to hear it ...
1. Main filter ... I dont know what to call it .. it will be switched to a 55 gallon barrel ... currently it is a 35 gallon trash barrel (doubled) ... hubby says all it basically is, is a solids seperator. It sort of makes me think of a skippy filter ... it is plumbed via 3" pvc with a syphon feed ... what I remember of it apart is the pump sits mid height, and has the big floor buffing pads as media ... included in all the same plumbing is a venturi and protein skimmer (think in ponds it's called an air fractionator???) ... Pump is 2150 gph ... water is removed from the pond, into this filter, then back to the pond... The venturi and protein skimmer are newer (added just before the fish went outside).
2. These two items are plumbed in line ... an old Laguna Canister filter with built in UV ,,, It's a Clearflo 1400 (supposedly rated for a 1400 gallon pond), 900 gph ... then to an old wet/dry trickle filter from our reef tank ... water runs over two plates, onto two rolls of course media (above water level), to a sump and returns to the pond .. there is what I call a venturi there too, but hubby keeps telling me I am wrong to call it that LOL. I dont understand. Something about it has the ability to drain more water than is being pumped in, so sucks air into the water ...
NOT on the pond at present, but WAS on the pond when the fish were moved outside, was also a Fluval FX5 canister filter, 925 gph...
Of the 100 babies, most (mix of standard fins and butterfly) are right about 6". The monster of the group is a solid 9" thick bodied standard fin, and there are maybe 10 runts who are just coming off of the 3" range ...
I did put ammochips in a couple times, but never rinsed/recharged them, so thinking they didnt do much other than sit there, otherwise, no benefit of the zeolite, no carbon, etc. Water changes varied ... on the average, I would say 70 gallons got swapped out about every 2 weeks ... water was removed via the filter backflows, and two 35 gallon barrels of dechorinated water added back,,, Fish were also heavily fed (about 2 cups per day, 1 cup AM and PM) til we started hitting the tipping point, and then cut way back til they were moved outside ...