I agree, 125-180 Max. I had a 180 on canisters on the 18th floor many years ago. I don't think the risk is worth it after that. That's not counting the risk of flooding and getting sued if a leak ever happenedHonestly I would not try and set up a 300 in an apt. The amount of weight your looking at for a running 300gal in nearing 5000lbs.
2400lbs in water weight
500 lbs for glass tank
300 or so for a stand strong enough to hold this weight
300 in substrate
125gal sump is another 1200 lbs
This is why I have stuck to 125s
?????ive done the checking and if i leave out the sump id be ok
does the brand have a high impact on how good they are? coz im not sure what kind of brands we get hereMost of us go by turn over rate. How many time the total volume of water gets pulled thru the filtration. We shoot for around 5times to 10times depending on stocking levels.
Now these manufacturers list on the products a flow rate in LPH or GPH. Liters per hour or Gallon per hour. They do these test with none of the sponges or bio-rings etc inplace. So what we actually get is about 60% give or take.
So knowing these two things going off your 300gal tank we are looking at a minimum of 1500 gallons per hour to 3000gph.
A FX6 is listed as 900gph so you get 600gph. So three FX6 gives you 1800gph.
Is your apartment building a large steel and concrete building or a wood framed building? If it is wood framed, there is no way it is going to support the weight of a 300g tank. The number reason for tank failure is due to the tank not being level which is either caused by the not leveling the tank or the floor supporting the tank gets warped from the weight.ive done the checking and if i leave out the sump id be ok