Thanks and no problem
. The 29 gallon has 10 tabs in the display tank and a few more in the refugium. The rest had to go into the 20 gallon with the pool filter sand since it was due for root tabs again. At some point I'll have to order more to have them on hand since I now know how well they work.
That is interesting. Is that related to bacteria inhabiting the areas close to the plant roots, or something else?