I am in the process of setting up a planted tank with dirt as suggested in the walstad method.. i have got soil (without any fertilizer or manures) at present im mineralizing that soil..
My concern is that which sand should i get for capping .. im having black sand (pic attached) can i use that ... I have read that very fine sand will result in anerobic conditions and with very coarse sand or gravel the dirt will come up.. what size /grade of sand should i prefer.... I have found some pool filter sand dealers who supply sand of various sizes / grade for. Very fine as 0.5 mm to 4-5mm size ... Pls suggedt right size sand for capping..
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