Bifferwine
I am a girl
You can buy your own TDS meter separately -- they only cost a few bucks. The in-line ones are nice and convenient, but it's fine to just check the TDS once in a while with a separate meter too.
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Seller responded back and said it's not safe for drinking and linked me to one that could do both, but I just ended up ordering this one.That's a better unit for the aquarium -- it has the DI stage. But you shouldn't be drinking DI water on a regular basis.
Seller responded back and said it's not safe for drinking and linked me to one that could do both, but I just ended up ordering this one.
Just want to point out that it can take a long time to effectively reduce the nitrates. The rocks can absorb the excess nutrients then slowly peach them out when you do a water change back into the main tank. It can take mo the for them to get rid of these extra trates
RO water is fine to drink. RODI water is not. That is why any of the units sold for household use (like at Home Depot or Lowe's) do not come with the DI stage.
Read these posts for more details:
https://www.livingreefs.com/ro-di-gravity-fed-float-valve-questions-ideas-t42072p2.html
RODI water will pull the minerals out of you blood stream and bones. It won't hurt you for a short time but long term consumption is bad. Most units have an RO only valve for drinking water.