urgent need help

[martin au]

currently my ph is (7.3-7.5) after water change.I
added some salt and tetraaqua blackwater but still
remained (7.3-7.5) so i try to add more blackwater
also remained the same.Will salt added affected the
ph.How to bring the ph to (6.5-7).

[JD Winata]

When you adding blackwater extract ,you re decreasing the pH level , but then you add salt ,you rise it again back to starting level.
Somehow (correct me if i'wrong) salt also rise buffering capacity of water so it s very hard and difficult to reduce the pH level.
My suggestion , change your water ( sedimented rain water is ussually had lower pH (even slight acid) and low gH also ) but carefull not to use rainwater from near industrial poluted area. Or use water from purified drinking water filter which is using reverse osmosis system or Ion Exchange system ,the processed water is easy to get lower pH and very stabil buffering capacity , so your pH level will not plays up and down.

[chndra]

currently my ph is (7.3-7.5) after water change.I
added some salt and tetraaqua blackwater but still
remained (7.3-7.5) so i try to add more blackwater
also remained the same.Will salt added affected the
ph.How to bring the ph to (6.5-7).

bro yr english exam failed he3x

[Eko Susanto]

Do you have any problem with a wrong grammar, chndra.....:confused:
e.g.: wrong-grammar phobia.....:confused:

[azura]

Do you have any problem with a wrong grammar, chndra.....:confused:
e.g.: wrong-grammar phobia.....:confused:
every time chndra replied u replied back too .......... play hide n seek ?!? :p

[jiet]

When you adding blackwater extract ,you re decreasing the pH level , but then you add salt ,you rise it again back to starting level.
Somehow (correct me if i'wrong) salt also rise buffering capacity of water so it s very hard and difficult to reduce the pH level.
My suggestion , change your water ( sedimented rain water is ussually had lower pH (even slight acid) and low gH also ) but carefull not to use rainwater from near industrial poluted area. Or use water from purified drinking water filter which is using reverse osmosis system or Ion Exchange system ,the processed water is easy to get lower pH and very stabil buffering capacity , so your pH level will not plays up and down.

bro do salt affect the kh/gh reading?

[rianfish]

bro yr english exam failed he3x

CHNDRA, u can't even spell yr name the right way :D :rolleyes:

[Eko Susanto]

every time chndra replied u replied back too .......... play hide n seek ?!? :p

Lagi sensitif nih.......:D

[vankough]

Jiet, check out this article http://badmanstropicalfish.com/articles/article5.html
I think NaCl does increase Hardness of water but not significant.