Changed out DE filter grids, now seeing sand in pool

[dclynds]

I replaced my DE grids 2 weeks ago and recharged with 10 scoops DE (48 sqft). Been noticing some sandy material on the steps near one of the returns ever since. Just now drained the filter and checked it again and it looks like I installed it correctly, but I notice what seems like beach sand on the top of the manifold. That couldn't be DE, could it? Seems too coarse. What the heck is it? Suggestions? Advice? Sweet nothings to calm my nerves?

FC = 5.0
pH = 7.8
TA = 85
CH = 375
CYA = ran out of testing material...

 

[satpoolman]

That sure looks like sand to me and not DE. What brand DE powder are you using?

Regards,
E

 

[Jimrahbe]

d,

I agree... that looks like sand and not DE... Did you use food grade DE? Although I have no idea what food grade DE even looks like...

Jim R.

 

[dclynds]

hth brand D.E. Filter Aid

 

[dclynds]

I am using hth D.E. Filter Aid. This is the same material I've always used and never noticed a problem before. The material on the filter grids is definitely the very fine D.E. material you would expect. But I do not understand why there is coarse material on top of the manifold and why there is material settling on the steps by a return. Any advice?