There is no reason a Sequence 5800SEQ23 would not work. Sequence makes
a great pump, and even their Value Flo models are
great........unfortunately they do not work as good in lots of ponds
ike the 750 series as they are both low head pumps, but the volume of
water they put out is fine.

I owuld regulate the flow with a valve as its more precise than usuing
larger or smaller sized pipe. A valve after the pump in the discharge
plumbing will not hurt anything and actually Sequence as well as WLim
will tell you its best to have them work against a bit of a load for
better efficiency. Its also best to have too much and reduce its flow
than insufficient flow and not be able to do anyhting about it other
than replace the pump. I think you will find the Sequence line of
pumps to be very efficient and move a lot of water economically and
dependably


Another company Performance Pro (IIRC) sold by Horizon Company which
is a pond supply company with dealers located all over the USA makes a
line of pumps identical to the line of the Sequence pumps but at a
laower price and with 1 years less warraanty than Sequrences 3 year
waranty. Its identical rght down to replacement parts with Sequence
pumps, and costs qute a few dollars less than a Sequence, not that
Sequence is expensive as I do not consider it big bucks for what you
get. However if you want a very very efficient and reliable pump have
you checked out the Wlim series of pumps........they rock, and
outperform most models of Sequence, but are somewhat more expensive.


On Sat, 18 Jun 2005 14:48:08 -0700, "zookeeper"
wrote:

===We have 3500 gal main koi pond (12 12-28 inch koi) with water lilies,
===underwater plants and marginals on shelves, 250 gal "vegie filter" waterfall
===head pond, a gradual waterfall (2 foot drop over 3 foot length), and DIY
===filter system built before we purchased home in 1997.
===
===Had a 3500gph Little Giant submersible from 1997-2005 -- least expensive
===alternative for flow rate available locally at that time. We were pumping
===from the pump in the pond through 2-inch flex line / 2-inch PVC to top of a
===50 gallon plastic barrel for first stage of filtering; line enters from top
===but discharges 1/3 from bottom of barrel. Two 3 inch pipes near top of first
===barrel overflow to two 50 gallon plastic barrels for biological filtering,
===then two bottom drains gravity feed back through 2 inch PVC to pond. A 1
===inch line to waterfall pond gravity flows from mid-top of first barrel.
===First barrel originally held filter fiber matting, and 2nd barrels
===originally held lava rock. First barrel now uses window screening material,
===and biological filtering material (textured plastic strips) in 2nd stage
===barrels.
===
===We want to replace the LG submersible with an external pump. We're looking
===at Sequence 1000 Series and considering 5800SEQ23 with primer pot / leaf
===basket. We want to place it in-line just before 1st stage barrel, pulling
===water through strainer, flex line and rigid PVC pipe. The total linear
===distance of hose/pipe from the strainer inlet to the first filter barrel
===would be ~12-14 feet, and the total height from the strainer inlet to the
===pump intake would be ~5 feet. The filter barrels are in a shed so the pump
===would be protected from weather. Cost is currently a major factor, although
===in going to the external pump we hope to save by reducing monthly electrical
===expenses. Do you think the Sequence will be a good choice for our setup? Do
===you think we can configure it as outlined here? It may be a little more
===powerful than we need now, but from what I've read, we control that by the
===size of pipes used for outlet (between pump and first barrel).
===
===In the future we plan to add a skimmer with a UV sterilizer to far side of
===pond and would like to draw water from there, both through skimmer niche and
===an attached flex line with bottom vacuum drain (instead of currently planned
===bottom line and strainer). If we add the skimmer, can it be used with the
===external Sequence pump pulling the water through it to the filter (barrels)?
===We may also want to add a stream from the waterfall head pond, but that
===shouldn't effect the size of the pump as water is not pumped but gravity fed
===to the head pond.
===
===Looking for realistic, on-topic, helpful feedback. Newsgroup filters in full
===swing ;-)


==============================================
Put some color in your cheeks...garden naked!
"The original frugal ponder"
~~~~ }((((o ~~~~~~ }{{{{o ~~~~~~~ }(((((o