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GroovyChic17

Is this sand safe for corydoras?

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Hello! I'm somewhat new to fish keeping and am currently in the process of setting up my first community tank. I'm planning on keeping corydoras and would like to get some opinions on whether the Double Washed River Sand I bought from Bunnings would be safe for them. I've read that the sand should be round/spherical and consistent in size - the river sand I have looks similar to sugar or salt but most appears to be under 1/2mm. There is the rare piece which may be 3mm or larger, but I would be willing to sift the sand if this is not acceptable. It doesn't feel abrasive when I rub it between my fingers, but I'm unsure if this is a reliable indication that it is safe or not.

I've also read a lot of conflicting information on pool filter sand vs play sand vs river sand and would appreciate any clarification on which would be the best sand to look at next if the sand I have is not safe. I have a pretty high pH already (around 7.7 according to my LFS) and realise I can't really risk having that go any higher - I've got a couple of pieces of driftwood which will hopefully help buffer it. I've heard that pool filter sand is suppose to be inert and not effect pH, but have also heard some had it raise it despite.

The ruler in the image is cm/mm. I'm planning on washing the sand before I put it into the tank and will rake the sand once weekly during/after water changes to ensure no gas pockets build up.

sand.thumb.jpg.9295884c08982a3db93a909b6e1b7371.jpg

(Also, apologies if this is the wrong place to ask this question or the image does not show etc as it is my first time posting properly. Thanks in advance for any help!)

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Hey Groovychic17, 

I've got my corys in a tank with sand (can't recall if it is pool filter sand or river sand) that looks very similar to yours. The whole point is to get sand that does not have sharp edges. River sand is good for this as the sand grains get tumbled by the flow of the river and over time the edges get worn down. As for size, the corys won't be perturbed by the occasional large grain, I used to have corys with a mix of gravel and sand with no ill effects.

 

Schmitee

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