Go Back   Aquarium Advice - Aquarium Forum Community > Saltwater and Reef > Saltwater & Reef - Getting Started

Join Aquarium Advice Today
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
Old 01-19-2005, 08:18 AM   #1
Aquarium Advice Regular
Join Date: Jan 2005
Posts: 64
can i initially use tap water to fill up?

when i initially setup th tank can i use tap water and then use RO water from then on?

or do i need to fill up with 130 gal of RO from the start?

thanks in advance


thepirate is offline   Reply With Quote
Old 01-19-2005, 08:22 AM   #2
Aquarium Advice FINatic
Join Date: Dec 2004
Location: Rocky Mount VA
Posts: 943
The tap water may add some bad things tothe setup only to be diluted later by water changes. Check the levels of the tap water and you may be OK. My tap water is high in phosphates and nitrates. I have stopped the phosphates but cant seem to get the nitrates down from my initial setup with tap.

Vote for AquariumAdvice

28gal bowfront
40lbs livesand(bag from LFS), 30lbs live rock(LR.com)
2 O. Clowns
1 peppermint shrimp, 5 red leg hermit crabs,
4 mexican turbo snails, 15 nassarius snails
ricordea mushroom, candy cane coral,
super color polyps, hairy mushrooms
bubble coral, hawiian feather duster
coralife lunar 2x65, HOT magnum canister
10 Gal refugium(chaeto) & seaclone skimmer
RMPD109 is offline   Reply With Quote
Old 01-19-2005, 08:53 AM   #3
Moderator Emeritus
Join Date: Dec 2002
Location: Franklin, TN
Posts: 3,968
You need to fill it with RO to prevent problems.
Bearfan is offline   Reply With Quote
Old 01-19-2005, 09:44 AM   #4
Aquarium Advice Addict
Join Date: Dec 2003
Location: Nebraska, USA
Posts: 6,703
The problem is, if you start with tap water, its gonna take months to actually remove all the tap water and replace with R/O water, because you're only diluting the tap water down a fraction, every time you replace with R/O.

plus, you can run into weird water chemsitry issues, some of which won't bother fish, but will affect inverts and especially corals. I started my 40g SW with tap water. Then I had weird low pH levels, semi-high Alkalinity, and calcium was half of what it should be.
So prior to adding fish, I did a 10g w/c with R/O, and that helped my pH a little, but for several months I still had low calcium and normal alkalinity, even when I'd add calcium.
I tested Magnesium and it was at a proper level, so it wasn't that which was affecting my chemistry.
Former advisor and planted tank geek...life's moved on though.
malkore is offline   Reply With Quote
Old 01-19-2005, 09:49 AM   #5
Aquarium Advice Addict
Fluff's Avatar
Join Date: Apr 2004
Location: West Virginia
Posts: 11,423
I agree with everyone else. You'd be doing yourself a favor by starting with RO.
Fluff is offline   Reply With Quote
Old 01-19-2005, 12:39 PM   #6
Aquarium Advice Freak
Join Date: Feb 2004
Location: Tucson, AZ
Posts: 243
Send a message via AIM to aquafreak Send a message via MSN to aquafreak Send a message via Yahoo to aquafreak
GO RO. I've used tap H2O and have found 375 ppm Phosphates in the tap water. Only a 50% water change with RO/DI water has saved my aquarium. My fish, snails, hermits, and starfish love it. And 99% less algae.

aquafreak is offline   Reply With Quote

tap water

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Initial water fill MarkW19 Saltwater Reef Aquaria 6 09-05-2007 03:57 PM
Water for first fill Agnate80700 Saltwater & Reef - Getting Started 9 06-11-2007 11:15 AM
can i fill a new tank with cycled water? justrelax Freshwater & Brackish - Getting Started 10 05-07-2006 05:54 PM
New tank ... first water fill? Jermz79 Saltwater & Reef - Getting Started 6 04-11-2005 11:39 AM
Should I fill the tank with RO water or add saltwater fishfreek Saltwater & Reef - Getting Started 3 07-17-2002 08:57 AM

» Photo Contest Winners

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 09:45 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.