As we also mentioned above, there can be a diurnal flux in PH levels from day to night. In areas where vegetation becomes far too abundant, the PH can become very high in daytime as plant photosynthesis peaks. The dramatic daily change, plus the daily peak in PH can both badly affect the urge to spawn, and affect the survival of bass eggs and fry. Although adult bass may live in brackish water environments, studies show it is not always the best environment for adult bass to prosper. Therefore, it is presumed that adult bass in brackish water will seek out fresher tributaries and headwaters for spawning purposes.
Clear water is preferable for spawning.
Studies have shown that there is limited survival and success in moderately turbid water, and eggs may not hatch in highly turbid waters. Fry are usually better able to survive temperature changes that would destroy eggs. Fry become independent from their father and optimal growth metabolism for fry is achieved during early summer at water temperatures between 78 - 85 . The above are just a few of the more commonly-recognized factors that have measurable effects on bass spawning. Many studies also show that predation on bass eggs and fry can be critical to the year's spawning success.