Hey guys. So I recently bought 2 nerite snails as I decided I need a bit of a mini clean up crew with my algae. I’ve put one in my 5.5G tank which houses a betta and the other in a 10g with some harlequin rasboras and honey gourami. There both very cycled btw. Perimeters are both ammonia=0 nitrite=0 nitrate 5-10. I’ve recently read that they need a source of calcium and I researched and saw cuttlebone is good for that. I can’t find it anywhere tho and shipping is very expensive. So I guess my question is if it’s really necessary that they need it. I’ve read that if you have high ph and hard water then it’s not necessary (I’m not too sure though) my ph Is around 7.6 to like 8. (On the water test it’s very dark blue and the lightest on high ph) and where I live tap water is moderately hard as they call it. So.. with my ph like that and the fact that my tap water is moderatly hard, do I have to put a source of calcium? I want the best for my nerite snails and other fish and I’m willing to do anything that’s the most convenient but safe. Thanks in advance!