u/redherringoutofwater

For a commercial pool, 155,000 gallons, with a flowrate of 300 gallons per minute, we have 3 Triton II Commercial TR-100C filters installed. Located in the northeast and used for summer only.

Does this have sufficient filtration?

Would we get noticeable difference if we upgraded size or number of filters (High cost to upgrade) or just keep current setup?

Any filter media recommendations? replacing sand /partial replacing sand annually/changing media type(to glass?)?