I Need Help Find Rocks

[Long Island Fish Guy]

Where's the best place to buy Seiryu rocks? I have this link from Amazon:
Graces Dawn Aquarium Fish Tank Seiryu Stone Random Shape Landscaping Decoration (5.5 lbs) https://www.amazon.com/dp/B014QSBRE4/ref=cm_sw_r_cp_api_H50lzbAHX2HHB

How many pounds would I need for a 29 gallon tank? I want to do 1 large, 1 medium, and 1 small. This is my first time getting rocks like this and have no clue what I'm doing lol

 

[Imsobored152]

Where's the best place to buy Seiryu rocks? I have this link from Amazon:
Graces Dawn Aquarium Fish Tank Seiryu Stone Random Shape Landscaping Decoration (5.5 lbs) https://www.amazon.com/dp/B014QSBRE4/ref=cm_sw_r_cp_api_H50lzbAHX2HHB

How many pounds would I need for a 29 gallon tank? I want to do 1 large, 1 medium, and 1 small. This is my first time getting rocks like this and have no clue what I'm doing lol

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Hard to know how heavy the rock is. I put about 90lbs of granite in my 125, its not much, but granite is a very heavy dense rock.

 

[Long Island Fish Guy]

I bought regular "Fieldstone" from a local nursery. Good/Safe?

 

[DeathStalker]

I use lacerock - man-made, basically dumping hot concrete into water, as I understand it. Stuff is wonderful. I probably have at least 50lbs in my 90gal tank. Any decent LFS (non-chain) should have some, or be able to order some.