Clown loach

[Clown loach]

I want to have a planted tank I have very soft water Ph 7 can anybody tell me which substrate brand I should use I'm thinking tiny lava rock then soil than fine sand on top (thin layer) 

[Superjoepez]

When you say soil you mean nutrient fortified substrate i assume. You really only need that if you plan on having fast growing root feeders and a lot of them. If you are using mostly rhizome plants don’t worry about the soil and just fertilize the water column. 
 

Be careful with fine sand as roots do not like pushing through them and the fine sand will fill in the space between the lava rock. I recommend looking at aquarium sand and trying to match a grain size to that. Try to avoid play sand or pool filter sand.

[Clown loach]

Thank you