MTS as in Multiple Tank Syndrome or Malaysian Trumpet Snails? Either way, id say youre right. Nobody ever has only one tank for very long before theyre ready for another, and(IMO atleast) all tanks with sand for substrate need the trumpet snails to keep the sand clean and aerated :thm:Thanks - tis my first tank. I learned a metric ton (tonne?) on here about the right way to do things. I feel MTS coming on...