Many Carbons are indeed loaded with Phosphate and they will
leach it into your tank.

Bill, you said this, and it was like a light went off....

What about Flourish Excel, does it have any phosphates in it?
--
RedForeman ©® future fabricator and creator of a ratbike
streetfighter!!!

==========================
2003 TRX450ES
1992 TRX-350 XX (For Sale)
1987 TRX250R (sold)
1987 CBR600 Hurricane (sold)
1987 VFR700 Interceptor (sold)
1995 TRX300ex (sold)
2000 CBR600F4 silver/red (sold) *sniff*sniff*
'98 Tacoma Ext Cab 4X4 Lifted....
==========================
ø¤°`°¤ø,¸¸¸,ø¤°`°¤ø,¸¸¸,ø¤°`°¤ø,¸¸,ø¤°`°¤ø,¸¸¸,ø¤° `°¤ø,¸¸,ø¤°`°¤ø
"By US Code Title 47, Sec.227(a)(2)(B), a computer/modem/printer
meets the definition of a telephone fax machine. By Sec.227(b)(1)(C),
it is unlawful to send any unsolicited advertisement to such equipment.
By Sec.227(b)(3)(C), a violation of the aforementioned Section is
punishable by action to recover actual monetary loss, or $500,
whichever is greater, for each violation."

If you do send me unsolicited e-mail I will proof-read it at a rate
of $100 per hour (4 hour minimum).

Many Carbons are indeed loaded with Phosphate and they will
leach it into your tank.

Bill, you said this, and it was like a light went off....

What about Flourish Excel, does it have any phosphates in it?
--
RedForeman ©® future fabricator and creator of a ratbike
streetfighter!!!

==========================
2003 TRX450ES
1992 TRX-350 XX (For Sale)
1987 TRX250R (sold)
1987 CBR600 Hurricane (sold)
1987 VFR700 Interceptor (sold)
1995 TRX300ex (sold)
2000 CBR600F4 silver/red (sold) *sniff*sniff*
'98 Tacoma Ext Cab 4X4 Lifted....
==========================
ø¤°`°¤ø,¸¸¸,ø¤°`°¤ø,¸¸¸,ø¤°`°¤ø,¸¸,ø¤°`°¤ø,¸¸¸,ø¤° `°¤ø,¸¸,ø¤°`°¤ø
"By US Code Title 47, Sec.227(a)(2)(B), a computer/modem/printer
meets the definition of a telephone fax machine. By Sec.227(b)(1)(C),
it is unlawful to send any unsolicited advertisement to such equipment.
By Sec.227(b)(3)(C), a violation of the aforementioned Section is
punishable by action to recover actual monetary loss, or $500,
whichever is greater, for each violation."

If you do send me unsolicited e-mail I will proof-read it at a rate
of $100 per hour (4 hour minimum).

Try Rowaphos. It has a very food reputation for dealing with excess
phosphate. I ordered some myself. I was having problems with green water
for months and then bought a phosphate kit and discovered the cause.
Interestingly a good hoover of the gravel and getting rid of some old plants
saw the phosphate drop to acceptable levels before the Rowaphos arrived.

Try Rowaphos. It has a very food reputation for dealing with excess
phosphate. I ordered some myself. I was having problems with green water
for months and then bought a phosphate kit and discovered the cause.
Interestingly a good hoover of the gravel and getting rid of some old plants
saw the phosphate drop to acceptable levels before the Rowaphos arrived.