so I've been using the BioPhos 3 for a couple of weeks now and I was wondering if someone could answer some questions about it's use and replacement frequency.
tank vol is around 40gal, effluent drip rate is 3ml/min, Ca Rx pH is 6.35 (crushed coral media). I started with the 1/4 cup of BioPhos 3 for 2 weeks, then tested the effluent PO4 and it was 0.12, so I changed out the media and used 1/3 cup this time. 4 days after changing the media PO4 was at 0.10 and 3 days later it is still at 0.10.. I tested PO4 in the effluent before adding the BioPhos media and it was at 0.17..
so to recap, 1 week ago PO4 = 0.12, then 3 days ago PO4 = 0.10 and today PO4 = 0.10.. Tank PO4 was 0.08 1 week ago and hasn't been tested since.
does this mean the BioPhos is only taking some PO4 out of the effluent ? Do I need more BioPhos media ? is the flow rate to slow ? or do I need to change the media more often than every 2 weeks ?
I just ordered a new dosing pump to replace the current one so I will be increasing the effluent rate to 5 - 10ml/min soon.
thanks,
rich.
tank vol is around 40gal, effluent drip rate is 3ml/min, Ca Rx pH is 6.35 (crushed coral media). I started with the 1/4 cup of BioPhos 3 for 2 weeks, then tested the effluent PO4 and it was 0.12, so I changed out the media and used 1/3 cup this time. 4 days after changing the media PO4 was at 0.10 and 3 days later it is still at 0.10.. I tested PO4 in the effluent before adding the BioPhos media and it was at 0.17..
so to recap, 1 week ago PO4 = 0.12, then 3 days ago PO4 = 0.10 and today PO4 = 0.10.. Tank PO4 was 0.08 1 week ago and hasn't been tested since.
does this mean the BioPhos is only taking some PO4 out of the effluent ? Do I need more BioPhos media ? is the flow rate to slow ? or do I need to change the media more often than every 2 weeks ?
I just ordered a new dosing pump to replace the current one so I will be increasing the effluent rate to 5 - 10ml/min soon.
thanks,
rich.
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