hello everyone, time for a update, the last couple of days we spent draining the 3 tiers, i have six of them, they stack 3 high, and i had filtration in each one of them so that menas 6 different water changes, it added to the work load of all the water changes that i need to do, so i decided to plumb them together into 2 different stacks, that means 2 different watyer changes instead of six,

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now all the water from the fluval 405 pumps to the top gets split into 2 lines, one on each side of the devider, and then runs into the internal filter of each tank and flows out the hole to the next tank, where it gets split into 2 inputs again and then when the water leaves the second tank, it all goes to the left of the bottom tank and starts over again from the left side of the tank traveling back to the 405 filter,
now each tank is somewhere around 80-90 gallons, so a total of 240 - 270 gallons for each stack, and i know that normally the fluval 405 would not handle that much load but each internal filter of the tanks has 2 sponge filters inside of it, and i also hav nothing in the tanks except for the baby growouts from time to time, right now i have a tigrinus cat and hes ready to be moved out , and i baby senagl bicher, and 3 discus fish with 6 apple snails, so there is really no bio load, so the filtration has been working great, if i ever need to i can move the filter up to a fx5.
here are a few pics of last night
