get the big ac500 or 110 model wichever it is now. Throw the carbon sack in a cabnet forget about it buy a second ac 500 spong throw both of them in the filter and u got 500 GPH threw duble sponges.
On them old crappy emp[s and pings throw the baskets and cartridges out buy 2 ac200 or ac300 spongs and one ac500 sponge
cut the ac500 sponge in half stick half in ech side of the ping 330 then take the ac200 sponge and place beside the half of ac500 spong to take up the slack.
Ac 500 best dam bang for the money and they never die
On them old crappy emp[s and pings throw the baskets and cartridges out buy 2 ac200 or ac300 spongs and one ac500 sponge
cut the ac500 sponge in half stick half in ech side of the ping 330 then take the ac200 sponge and place beside the half of ac500 spong to take up the slack.
Ac 500 best dam bang for the money and they never die