How much water do you keep on hand?

[RRaider]

Just curious how much water on average others keep on hand relative to their tank size.

Right now I have enough to do a 100% water change in case of an emergency but I'm thinking of upgrading my tanks and I really don't have room to store much more than 50 - 60 gallons.

[trmiv]

Zero

[dhammers06]

one 32 gal garbage can. I can produce more if needed

[dwd5813]

between 20-30 gallons for my 40B

[Gdevine]

25% always on hand for an emergency.

[0b1]

about 30-50 gallons

[Untamed12]

Only 100 gallons on hand at any moment. That's 20%. Right before a water change I have 150 gallons.

[reefrf]

Approx. 30g on hand. Also have the ability to make more, but only 50g per day.

[Mr. Brooks]

100 gallons on hand, 225 gallon tank.

[onano]

20-30 gallons on hand for my 75 and 24. Water changes for both tanks is about 15 gallons per week. I can make make 100gpd if needed.

[snorvich]

250 gallons of made up salt water circulating in a large tank with a pump and heater.

[Freed]

192 gallons at any time in two separate containers, 96 gallons fresh RO/DI and 96 gallons ready mixed, heated salt. 180 gallon main tank with 60 gallon sump.

[KRASHPD]

I keep about 40gallons in a brute container the fills up automatically and the ato always has 5-20g at any time.

[Pheeshes]

i have an 85 gallon system or so and i usually keep about 30 gallons ready to go then another 30 gallons of RO water so i could make more if i needed to in an emergency.

[Rouselb]

50gal for a 200gal tank.

[Playa-1]

I usually have 30 gallons of mixed saltwater and 30 gallons of RO/DI water on hand at any time. I have a 180gal system.

[rhunter513]

10g saltwater 5g RO water for my 24g tank

[drauka99]

I keep - 30 gallons RO/DI water
and 30 gallons heated SW mixed (I keep a mag5 in there turning the water over

I was told by a hobby chemist who said that mixing less than 30-40 gallons at a time may cause you to miss out on some of the smaller ammounts of minerals in the mix, so I mix 30 at a time.

This is for a 24 gallon display and 55gallon sump - total volume around 60 gallons

[bimmer01]

I keep about 10% of water for emergencies.

[rbaker]

I try to keep around 80 gallons of water on hand for my 180...

[PSU REEFER]

Between 30-50 gal. at any givin time for my 150..