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View Full Version : Please give me thoughts on my tap water readings.


Drip Loop
06-11-2008, 01:43 AM
I currently have 3 tanks setup at my home. I figure if I list my tap water parameters maybe I can get some opinions on why they are the way they are and what I can do to them to suit all my fish.

Tank 1 (16gal heavy planted bowfront) - Community tank (tetras, rasboras, corys, otos, cherry barbs, cherry shrimp)

PH - 7.4 (This is going down as soon as my Co2 begins tomorrow)
Ammonia - 0
Nitrite - 0
Nitrate - 10
KH - 3
GH - 15 (higher than tap water perhaps from liquid ferts and dry tab ferts??)


Tank 2 (55gal African cichlid) - syndontis multi, bristlenose, various Africans

Ph - 8.4 8.5ish
Ammonia - 0
Nitrite - 0
Nitrate - 60-70 (water change done already after noticing)
KH - 9 (added baking soda during water change to supplement tap)
GH - 8-9 (im guessing inaccurate reading cause there are no ferts or plants in this tank so can assume same as tap i guess)


Tank 3 (2.5 hex cherry shrimps) - Just three cherrys with sponge filter
Newly setup with only the three shrimp, regular 40% water change everyweek and light feeding so should be no problem here.


My Local Tap water (I live in Florida where limestone is prominent underground)

PH - 8.6ish
Ammonia - 0
Nitrite - 0
Nitrate - 0
KH - 2
GH - 7

Ph is very high but carbonate buffer is really low. Why does this occur? Am I to then assume just a little acid buffer will bring that PH down with relative ease? If at all possible I would like to use this tap water for my community tank somehow considering the price of all the bottled water I get. R/O is unlikely for a few months or longer. I know that most fish can adapt to a wide range of PH, but it seems that would have to be too high for tetras to do well right?

Thank you

Drip Loop
06-11-2008, 02:44 AM
bump! Still need help here please.

Lab_Rat
06-11-2008, 05:10 AM
Did you let the tap water sit for at least 24 hours before testing it? If not, it could be giving you false readings. I would resist using buffers that rapidly change the pH since these can lead to deadly pH swings. A better way to lower pH would be to add peat to your filter. This will lower the pH slowly and more consistantly so it's safer for the fish.

I'd try to get the nitrates in your african cichlid tank down to below 20ppm. They need really high quality water to do well as the rift lakes (which is what I assume you have) are quite clean.

Drip Loop
06-11-2008, 11:33 AM
Looking for more advice if anyone can

Drip Loop
06-12-2008, 12:02 AM
Still need help if anyone can

Drip Loop
06-13-2008, 12:42 AM
=( weep!