^ don't take the risk, I think you can also buy some liquid that speeds up the bio media process. I'd also think about taking the loaches out so you can cycle your tank, they're very sensitive.
I'm not sure if it's correct but while cycling i didn't do any water change. It took about 3 weeks, just keep testing your water and you'll see the figures starting to rise then they'll drop, this means your filter and tank are cycled. you can then gravel vac, clean the glass anf do a big water change. Your tank will then be ready for the nice fishes.
It looks good by the way, i like the center wood but just move it around a bit and when you're happy keep it that way.
What filter are you using?