The bottle will say, 3 drops per gallon or some such number. So you add the amount to treat the 12 gallons. Not the 50 gallon as the water in there already has the chlorine gone.
MikeO said:just go to your local supper market and by 1g distiled water, dump that water, it is useless you don't want distiled water, there are things in the tap water that distiled water will lack...
jagarundi said:I change about 30% of my water every Sunday. I use the water DIRECTLY from the tap and I don't treat ANYTHING. I agree with another poster that some of these people make it seem as if it's ROCKET SCIENCE in dealing with EVERY ASPECT of keeping fish! I've had my fish going on 5 years now and had them since they were babies. They are all huge and healthy adults now.
Distilled deionized water contains purely water. This means that the GH and KH will both be 0 since there's no carbonate or bicarbonate anions and no magnesium and calcium cations. If the KH is 0 that means your PH is highly suseptible to change since there are no bi/carbonate anions to bond with the hydrogen cations causing your tank water to become acidic very easily.mister ben said:Can you be more specific as to what is wrong with bottled water? I was told that buying distilled water from the store can actually be a great way to do water changes (some people find it more convenient I guess).
Kasakato said:But what about the chems in the water? It is killing any bacteria that is in the water and in the filter. Test your water for ammoina, nitrites, and nitrates.
Aqualung said:On these forums it often seems that people assume all tap water contains harmful chemicals. I have well water with no chlorine or chloramine, and adding water straight from the tap is quite safe if done in small amounts. For my water changes I use aged water though, because my water out of the tap has a ph of 6.4. After sitting for 24 hours, it is 7.0 which is the same as my tank water. I age my water to avoid ph fluctuations.
I like what RTR said about adding unnecessary elements to the water, and I feel the same way. For some situations it is necessary, but if there is no need for it I would rather not add anything to my water.