I have a 55g. freshwater aquarium. PH is pale yellow (API drop tester)this color doesnt even register on the reference card the tester came with. I tested my tap water, PH was around 6.5 but when I did a 10% change, the aquarium PH level never budged. I've added 1/4 of a med mesh bag (crushed coral filled) for approx 3 days....nothing. two days ago, I filled the bag 100%....nothing! I've added 1/2 dose of PH up, a day later the full dose.... both did absolutely nothing. Is there something in my tank that is immediately nuetralizing my attempts to higher the PH? I have two canister filters, (Fluval- which holds the filter- whish is red in color now, bioballs, charcoal bag and now crushed coral).... a Marineland canister kit which includes the cylinder filter and two bio-wheels (which hook on top)..... I am 1.5 year experienced with my freshwater aquarium.
Thanks for any insight.
Do you have a decent lfs (not chain store!) near you? Take a sample of your tap & your tank and have them test ph, gh & kh. Let us know what these numbers read & we can go from there.
Do you have driftwood in your tank? What type of substrate (specific)? Some substrates will make water very acidic & reduce kh/gh.
Looks to me like a perfect ph for setting up an amazon biotope tank .
apparently not... I asked for the readings you asked, they only know PH and Ammonia. I have a small piece of driftwood (I've had while my PH was extremely high) PH reading now is less than 6.0..... I'll spend some time tomorrow getting the answers you need, and will let you know.
Did you ever find the solution? My tank is very similar and I am having the same problem.