Calcium supplement for Crytocoryne balansae and C. aponogetifolia?

R

Russ

Guest
I've read several times that a calcium supplement is good for these crypts. What is a readily available source to add to tank water? How much?

Thanks,

Russ
 

Tom Barr

Founder
Staff member
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Jan 23, 2005
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CaSO4 works well, not much, perhaps 5ppm or so.
I do not think it's so much Ca as it is KH.

The plants do very well in very soft waters in both natural native systems as well as aquariums.

Regards,
Tom Barr
 

Carissa

Guru Class Expert
Jun 8, 2007
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Calcium chloride (pool hardness increaser) also works well, this is what I use.