Hello, Can someone kindly explain what the best next step is, please?

I measured arsenic concentrations within solutions after application of different treatment at different time intervals.

It has been suggested to me that I use a two-way ANOVA to analyse my results. I ran a GLM with time and treatment as factors against As concentration.

My results showed

Factors ----------df----------As

Treatment-----------4------------10.34***

Time -------------------5------------32.41***

Treatment*Time-20-----------1.01*

*(p

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