ideal kH for planted...

isit around 4-5?

I always had the notion that having a KH of 4 is ideal but recently I was told it doesn't really matter.

But I always like to err on the side of caution since with CO2 injections I prefer to have around a dKH of 4 to prevent pH swings. I had unusually low KH for one of my tanks and the inhabitants were wiped out due to the pH spikes.

-Calvin

[biweilow]

how to increase/ decrease kH?

means kh is a must to increase abit la...
so ph will be buffered..

Originally Posted by biweilow

how to increase/ decrease kH?

to increase add baking soda
to decrease add reverse osmosis water (I think )

Originally Posted by anzp85

isit around 4-5?

GH & KH RANGE - AQUARIUM LIFE
0°-3° (0-50 ppm) discus, arowanas, elephantnose, neons, cardinals, live plants

3°-6° (50-100 ppm) Most tropical fish including angelfish, cichlids, tetras, botia, live plants

6°-11° (100-200 ppm) Most tropical fish including swordtails, guppies, mollies, goldfish

11°-22° (200-400 ppm) Rift lake cichlids, goldfish, brackish water fish


I got the above information from net, can't remember where though

[biweilow]

Originally Posted by Shad0w

to increase add baking soda
to decrease add reverse osmosis water (I think )

won't baking soda affect the pH also?

reverse osmosis water means NEWater, right?

is there a negative value for Kh...
i noe tap water is kh 0...
if i not wrong la..

As far as I know, KH is either a value or just 0.

Its always good to have some buffering capabilities.

-Calvin

Originally Posted by biweilow

won't baking soda affect the pH also?

reverse osmosis water means NEWater, right?

Yup, increasng KH will also increase the PH, macam they go hand-in-hand. That's how we can use the co2 chart mah. We inject CO2 to bring the PH down.

As for RO water, sama the Newwater bah. Should be distilled water. Havn't got chance to try a RO unit yet.