Often times I'll backwash then faucet the gold up, Enable the gravel drain, then pan out a few of the light-weight materials at The underside, then get started around. But it is an enormous place so there may be spots beyond these that i'm not aware about. Click to extend... https://swiss-directory.com/listings787975/gold-standard-100-whey-protein-for-sale-things-to-know-before-you-buy