So I upgraded my 125 gallon Marineland setup to a 210 Aqueon back in May. As it was doing well until two Sunday’s ago when Leak detectors started going off. Long story short a crack on the back wall from about top center to lower left corner appeared. Was able to move livestock and fish to a friends tanks. The tank has been replaced under warranty. Tank has sand and rock in it anstarted the cycle process. My question is do bacteria’s like Stability or any of the others actually speed up the cycle process.