If you check out the rest of his site, it's quite incredible the amount of work that went into that thing. It's hard to imagine that there's that much that needs to be done--it's a tank with a heater, filter and lights, right? But the whole setup is a lot more complicated than you'd first think it'd need to be.
He claims that the total for the whole project was 5000 Euros. I find that hard to believe... Some ppl's 55 gallon
SW tanks cost that much to set up, if not more.
Hey just a thought... Let me see if I can articulate it...
So, say you have:
1) a
RO (reverse osmosis) unit and perhaps a R/O booster pump (makes sure you have enought pressure to operate the
RO unit);
2) a really good, *automatic*, reactor to mix necessary chemicals (safe buffers and trace mixes etc.--necessary for
RO setups) into the fresh water coming out of the
RO unit.
3) a pump system designed to take water from the tank, through the
RO unit, into barrels to age the water, and then back into the tank
If you plumbed the whole thing up to work at the 100 gallon per day rate many
RO units work at, you might never have to do a water change. You could simply do top-offs. It'd be perfect, too, as you'd be changing out 10% of the water every day, and 100% every 10 days.
I know many ppl say this about regular tanks, but with a
RO unit this could actually be a possibility, as
RO units take almost all particulates and chemicals out of water. With a diatom filter, or a regular filter, you can't do this, as nitrates, phosphates and other harmful chemicals stay in the water if it's not purified, but with a
RO unit, this concern is moot. And with a
RO unit, the new water you're putting in the tank is cleaner and more suited to your fish than your tap water!
What do you think? Kinda a neat idea, I think.