"Duncan A. McRae" wrote in message
ble.rogers.com...
Actually I simply renewed both jugs -- I'll be back long 'ere they'll run
out. I'm still curious to know how long to expect them to last, however.



As already stated, probably no longer than the standard size- 10-14 days.
The extreme mixture you've made has no advantages that I can think of.
You're just wasting ingredients. The standard mixture was arrived upon by
comparing info from real-world situations by novices and experienced
aquarists alike. It's the best blend of quantity vs. quality.