hey guys i bought a 125 gallon tank with a fluval 305 that needs some work, so the next day i bought a 405 and its currently running, but i looked into more details and it says its only good for aquariums up to 100 gallons, so will it be worth spending maybe 50 more bucks to hopefully get the 305 started to filter my tank along with the 405? please let me know guys! thanks!