1.1.4 Further Comments About Water
Description
This article is from the ReefKeepers FAQ, by several authors (see the Credits section).
1.1.4 Further Comments About Water
The ultimate in home water purification comes from combining the
two technologies and processing the water from an RO unit though a
DI unit. If a very high grade DI unit is used, water equivalent
to triple distillation purification levels can be achieved. Since
the water entering the DI unit can be 50 times purer than
tapwater, the DI unit can process 50 times as much before the
resins are exhausted. This significantly reduces the replacement
or recharging cost of the DI unit.
If only one filter can be afforded, and waste water is not a concern,
then it is recommended that a TFC RO unit with pre-filters be purchased.
If waste water is a concern, or if only a small quantity of make-up
water will be required (say, for a single 20 gallon tank), then a DI
unit would be the preferred choice.
City water is unstable. Many cities modify their treatment
process several times a year, dramatically changing its
suitability for reef usage. For instance, Portland has great reef
water - most, but not all, of the year.
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