Snails in high PH hard water

[graysilm]

I was wondering if anyone had any recommdations on any good larger size snails that eat algae, that go good in hard high ph water. I want some for my malawi tank.

 

[bluefish80]

I used Mystery snails (yellow shells) for a few months in a high PH tank they done the job fine. I only used 4 in a 100G tank they move and feed fast. I took them out after the algae was gone. There are others that are recomended for algae i dont recal the site i seen them on.