I bought some HDX acid and noticed it’s pretty watered down so I was slightly concerned about it. Ive heard the more concentrated stuff from a pool supply store is better. I have no idea what’s in the sea chem stuff but I am assuming it’s going to be fine for an aquarium because well you know. I was having problems with the tank before trying the muriatic acid so I decided I didn’t want to add another possible variable to think about while trying to get my tank back in order.I am not worried about it. The most nasty stuff that I put into my tank comes from the fish food (who knows what is in that stuff, but I do know that it contains a lot of metals). 20mls to 300 gallons is no big deal... and I also skim, have aragonite and change water so exporting metals and other nasty stuff should happen as well as it can. How does anybody know that the seachem acid buffer is pure? We all know that kalkwasser is not, calcium chloride, baking soda all have levels of impurities. I just assume that this is a risk that we all are taking, whether we know it or not...![]()
What acid do you use? I’d try it again if I knew others were having success with a certain brand. I was just hesitant because I couldn’t find anyone else that used the hdx brand.

Upon first glance this is an expensive hobby so it is always wise to see where we can save a dollar here and there.


