Major water change

[1bigstud]

I've recently had some issues with corals in my tank.
After doing water changes an tests water parameters are now good.
After some consultation, I've decided there may be a foreign poison that I cant test for (ie metal contamination, etc etc)

At this point the best course of action would be to do a major water change in my tank,
essentially I'm gonna empty my display 75 gallons,
does anyone in the richmond are have an extra mixing container (ie garbage bin, or empty tank),
and a power head/heater I could borrow for about a week.

Please pm or text me
Rick
6045379356