Water in StL (Webster Groves) - The Planted Tank Forum
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post #1 of 5 (permalink) Old 04-04-2017, 02:42 AM Thread Starter
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Water in StL (Webster Groves)

I'm going to be knocking down my reef tank and doing a minimalist planted tank (all turf with a bonsai tree). I have an RO/DI line coming up to the tank that I used for topping off the reef tank.

Is there any good reason to use or not to use RO/DI in the new planted tank?
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post #2 of 5 (permalink) Old 04-04-2017, 03:01 AM
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There can be arguments made for either using or not using. Much depends on some of the personal choices you make as you go along. Type of fish and plants is one that will change the answer. Hard alkaline fish and you may want to go with tap and choose plants to match. Set on a particular group/type of plant that requires or does far better with softer water and you may want to go ro/di. The biggest difference I see is the GH/KH of the ro versus tap. Tap may be a little too hard and require more care to keep some fish or some plants and on the other end, the RO may have none of the needed minerals like calcium and magnesium that we need for them to do well. That may get you into using RO which removes the minerals and then you have to add them back.
So no firm answer? Tap may be good, cheap and may be far easier or RO may be easier, even though a bit of expense and bother. Much depends on how you feel about each but both have their good sides.
Personally, I hate the fuss and just adapt my tank to fit the hard alkaline water I find in most places I wind up.
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post #3 of 5 (permalink) Old 04-04-2017, 03:57 AM
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Hi SteveSTL,

As an alumni of WG ('68) I want to welcome you to TPT!

Actually St Louis tap water is pretty darn good for plants but obviously treat to remove chlorine and chloramines. If you would like you could do 50/50 tap and RO and be in pretty good shape as well. There are several MO members here on TPT and a small bunch from the StL area. You have a very good aquarium club in St. Louis, check out MASI (Missouri Aquarium Society) great plant growers and fish breeders there. In fact the guest speaker for MASI on April 20 is a member of our Seattle club - Lawrence Kent!

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post #4 of 5 (permalink) Old 04-05-2017, 03:54 AM
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Steve, Im also in STL and know others with very successful planted tanks here. Never felt the need to use anything but tap since 2006 for planted tanks.

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I'm in the Saint Louis, MO area and always looking to connect with other planted tank enthusiasts.

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post #5 of 5 (permalink) Old 04-05-2017, 11:55 AM Thread Starter
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Thanks everyone. I guess I'm just trying to justify keeping the line from the RO unit in place to do top offs.

@Seattle_Aquarist , my daughter will be class of 2019 and my son class of 2022

Unfortunately, I won't be able to make the meeting as baseball season just started and that's batting practice.
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