lava rock?

[LilysDad]

can i use lava rock as part of my filtration?

 

[fishguy242]

hi, i'd say no, too much iron leaching.

 

[Jekyl]

can i use lava rock as part of my filtration?

I believe it has high metal content which isn't a good thing necessarily. Might be wrong on the reason but know it isn't recommended

 

[LilysDad]

can i use lava rock as part of my filtration?

it'll be in the sump as part of the bio

 

[Jekyl]

it'll be in the sump as part of the bio

Location wouldn't matter. Regular dry rock would be a better route

 

[fishguy242]

still part of system.

 

[WheatToast]

hi, i'd say no, too much iron leaching.

I believe it has high metal content which isn't a good thing necessarily. Might be wrong on the reason but know it isn't recommended

I have maintained a coldwater marine tank with some lava rock in the past, though leaching from the rocks (and other freshwater substrate) likely caused the never ending diatom bloom in said system :(. Plus, the surface area of lava rock (and thus its biological filtration capabilities) is inferior to that of ceramic bio-media in the hobby.