what is the best size gravel

[corsas fishy tales]

What is the best size gravel for a planted tank that will be running a undergravel heater?

[kalebjarrod]

nice to have you on board,

i use 2mm washed gravel, seems to let water movement through the profile, cleans well and allow for plants to ancoor well.

although this is mine personal choice thats all

[flukes]

Yeah i like the 2-3mm seems like a nice size, dopnt have any reasoning but i could imgaine smaller would be a hassel to clean.
Then again dont mind river pebbles if you can find some for sale, normally if i find a lfs with a couple of bags ill grab them even if i dont need them, for some reason i just like the look of river pebbles just looks a bit more natural.

[corsas fishy tales]

thanks for the information what is the best type of gravel to use i have heard that iornstone is good but hard to get and can be expensive?

[kalebjarrod]

most river rocks / pebbles are good as long as thier NOT calcium based.

[flukes]

Just dont get caught taking them out of the river, had a LFS get caught got wacked with a $10,000 fine.