Too much sand is just going to create dead spots where an-aerobic bacteria will build up causing issues.
Something I saw on page 2 - Amquel. When do you use it? Amquel reduces the disolved oxygen level in the water, which could just add stress to an already stressful situation.
Your pH can dip for several reasons. Biological load increasing greatly can cause it to drop off. An increase in CO2 can also do it (like too many fish in a tank). Keeping a tight lid on the tank can lead to this. Not enough surface movement for proper gas exchange can also lead to it.
Something I saw on page 2 - Amquel. When do you use it? Amquel reduces the disolved oxygen level in the water, which could just add stress to an already stressful situation.
Your pH can dip for several reasons. Biological load increasing greatly can cause it to drop off. An increase in CO2 can also do it (like too many fish in a tank). Keeping a tight lid on the tank can lead to this. Not enough surface movement for proper gas exchange can also lead to it.