pH levels
 

Hey Ron. Can one use an algae destroyer, like the kind you use in a fishtank? It seems to be nontoxic to fish & marine plants. Also I've never noticed an increase in PH levels. Do you know if this would effect veggie/herbal type plants in your system? Active ingredients SIMAZINE 2-chloro-4, 6-bis-(ethylamino)-s-triazine 0.60% inert ingredients 99.40% . Calls for 1 teaspoon per 10 gal. of h2o.KEEP UP THE EXCELLENT WORK....

I don't know about an algae destroyer but if you try it please let me know if it works.
pH levels will change over time so it is important to adjust them periodically for optimum performance.
Between 5 and 7 your plants will grow with around 6 being the best for most plants.
Ron