While vaccuming Green content return to the water from filter

Your signature doesn't show which type of filter you have, but it would appear it's overwhelmed with algae. Some of it is going to blow-on past. Are you currently performing the SLAM Process? If so, when was the last time you cleaned the filter?
 
Your signature doesn't show which type of filter you have, but it would appear it's overwhelmed with algae. Some of it is going to blow-on past. Are you currently performing the SLAM Process? If so, when was the last time you cleaned the filter?
Yes SLAM, It's DE filter. I bought new DE filter and while vaccumming i see it return some green content back to the pool.