Do I need Di filter if...
- Thread starter Ahetrick74
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- #newbie #rodi
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chipmunkofdoom2
Always Making Something
Yes. Many undesirable compounds are present in water purified by reverse osmosis that can only be removed by deionizing resins. These elements include, but are not limited to, copper, ammonium, silicates and phosphate.
Water quality is one of the most important components of a reef tank. I like saving a buck more than almost anyone else, but this is a bad place to do it.
Water quality is one of the most important components of a reef tank. I like saving a buck more than almost anyone else, but this is a bad place to do it.
Adamantium
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I would absolutely use one. 2-5 TDS is pretty much what we all end up with after RO, but then putting it through DI gets us to 0. You don't know what that 5 TDS contains, so you're better off using DI resin to polish it up. If it's copper, or silicates, you're gonna have an ugly/dead tank.
Hellic
Active Member
I know this is an older thread, but it was one I found on a google search with DI questions, and whether or not I should add that stage. So I believe this post is still relevant.
One person said the DI resin removes phosphate and silicates, but that is actually not true. Phosphate and silicate can still be found with a simple test kit result after checking your rodi water. I even confirmed this through ICP testing. Where a DI resin does come in handy is by removing the last bit of TDS after the RO stage. How much TDS remains after your RO stage, you will have to determine with a TDS meter. After checking mine, my TDS was only at 003 ppm with a 2 year old membrane. I would actually say that a DI stage may be totally unnecessary for my water considering the results. It might actually prove more beneficial to use a phosphate/silicate removing filter, instead of a DI filter, to aid in algae control.
One person said the DI resin removes phosphate and silicates, but that is actually not true. Phosphate and silicate can still be found with a simple test kit result after checking your rodi water. I even confirmed this through ICP testing. Where a DI resin does come in handy is by removing the last bit of TDS after the RO stage. How much TDS remains after your RO stage, you will have to determine with a TDS meter. After checking mine, my TDS was only at 003 ppm with a 2 year old membrane. I would actually say that a DI stage may be totally unnecessary for my water considering the results. It might actually prove more beneficial to use a phosphate/silicate removing filter, instead of a DI filter, to aid in algae control.
naterealbig
pea brain
This.
naterealbig
pea brain
I wouldn't even use 0 TDS water without a DI filter.
