Iím hoping someone might be able to help me with my pH/KH
I have a 160L tank and the current occupants are: 10 cherry barb, 6 albino cories and 1 BN pleco. Thereís also a few cherry / armano shrimp which are new additions.
The tap water in my area is ridiculously soft. Both KH
read at zero when I first got the tank. The pH was very slightly acidic. My two LFSs have both confirmed that this is normal for our area.
So every day I am doing the NT Lab aquarium tests and dutifully recording the results. Iíve tried to up the KH
using a range of methods. Iíve added a lump of some rock recommended to me by my LFS
, Iíve added crushed oyster shells and Iíve been using some KH
Up products. Iím currently up to the dizzying heights of KH
= 4 and GH
= 9. The problem is that the KH
Up products seem to keep raising the pH too. It started around 6.5 during my fishless cycle but eventually got up to 8. With the help of a bit of pH Down, itís currently fairly stable at 7.5 since the fish were added.
So my dilemma is what to do moving forward? It seems impossible to get the KH
up to advisable levels without skyrocketing my pH. Is this correct? I thought the whole point of the KH
was to stabilise and buffer against pH fluctuations, but if trying to get it to an advisable level means sacrificing my pH, it seems like a completely pointless exercise? Does anyone have any suggestions for me moving forward? I donít really want to keep chucking Up and Down products in.
The second part of my question regards changing my pH from its current 7.5. I have my heart set on some green neon tetras, but Iím told they need 5.5-6.5 pH. If I very slowly start lowering my pH to 6.5, will the current occupants be ok with this? Or am I now pretty much stuck with the 7.5 they have now?
Thanks for taking the time to read this, and I look forward to any suggestions.