u/Remarkable_Ad_5412

55 gallon aquascape. Second image is what I'm trying to do. Anything I should do before putting it all together

55 gallon scape. Second image is what I'm thinking of trying. Any suggestions or advice before it's all put together.

Planning on shaping my new 60g tank but looking at the cost of everything it's too expensive. so I looked around and found some decent looking rocks at a creek nearby. I did the vinegar test and there was no reaction but when I did the test with the nitrate bottle 1 there was a reaction. So are they safe or not.