sciencefiction
Member
- Joined
- 26 Feb 2013
- Messages
- 3,412
Ok, so I am a bit puzzled between the Total dissolved solids reading of two different tanks which haven't got water changes for a good while and I thought you guys may know.
Tap water(original readings in both tanks)
TDS: 300-ish
Gh: 12
Kh: 8
Ph: 7.4
Tank 1:
Soil type 1
Heavily planted. Non-fertilized ever.
Fully closed with lid, little to no evaporation
No water changes for nearly a year.
TDS reading: 200ppm
Gh:7
Kh:2
Ph:7.4
Tank 2:
Soil type 2
Heavily planted. Non-fertilized ever.
Open , water evaporates fast enough.
No water changes for 7-8 months
TDS reading: 500ppm
Gh: 14
Kh: 4
Ph; 7.4
What do you guys think, why did those two tanks went completely different way as to water chemistry?
Is it because the soil is different maybe?
Or because the enclosed tank with low TDS has got no evaporation and little top ups?
I have other enclosed tanks that get no evaporation and the TDS still rises over time if I skip water changes so that's why I am not certain why the TDS in one of the tanks dropped significantly and the water is now soft in there, though the red cherry shrimp are still doing well in it, overrunning the tank.
And also why did the Ph remain the same?
Tap water(original readings in both tanks)
TDS: 300-ish
Gh: 12
Kh: 8
Ph: 7.4
Tank 1:
Soil type 1
Heavily planted. Non-fertilized ever.
Fully closed with lid, little to no evaporation
No water changes for nearly a year.
TDS reading: 200ppm
Gh:7
Kh:2
Ph:7.4
Tank 2:
Soil type 2
Heavily planted. Non-fertilized ever.
Open , water evaporates fast enough.
No water changes for 7-8 months
TDS reading: 500ppm
Gh: 14
Kh: 4
Ph; 7.4
What do you guys think, why did those two tanks went completely different way as to water chemistry?
Is it because the soil is different maybe?
Or because the enclosed tank with low TDS has got no evaporation and little top ups?
I have other enclosed tanks that get no evaporation and the TDS still rises over time if I skip water changes so that's why I am not certain why the TDS in one of the tanks dropped significantly and the water is now soft in there, though the red cherry shrimp are still doing well in it, overrunning the tank.
And also why did the Ph remain the same?