hi, i have 2 eheim 2217's on my 125gal tank right now, but i was going to pick up another 125gal tank this week and i was wondering if i can use just 1 2217 on each tank or should i just get a eheim pro 2080 for the other tank. the 2217 is rated for about 160 gallons, but i dont want to put a strain on the 2217. i know that extra filtration is good, but will one 2217 be enough for the 125gal?