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I saw an old thread on cleaning marble pavers and wanted to add my own experience. My dog has left muddy paw prints on our nice unsealed white marble pavers. The stains were bad and had gotten into the pores of the unsealed stone. gentle soap in hot water with a serious scrub brush did nothing...

PLEASE HELP. we had a storm last week and it seems that the problem roughly corresponds with that although I am not quite sure about the dates. I suspect a brief power outage may have occurred. My pump stopped responding to the intellicenter. The pump display IS ACTIVE, showing GPM etc. It will...

thoughts???

I have recently installed an intellicenter at my place. I need to replace the existing non-functioning pentair pool and spa lights and would like to consider options and receive advice. I am inclined to do a 120v install. What LED's should I consider? Thank you in advance for your thoughts.

I have a spillover spa. It is about 2 ft wide at the spa and about 30" wide where it spills to the pool. It will sustain a nice looking spillover with about 55 gpm but requires in excess of 70 gpm to consistently initiate a nice laminar spill over. Below these flow thresholds the water just...

I re plumbed my whole pad and have a suction leak. I will soon be trouble shooting this. I suspect some leakage at the newly installed Jandy diverter valves. Do these sometimes leak air right out of the box? I do not want to rebuild them unnecessarily. Anyone have experience with this?

I will be installing a pentair XF VSF variable speed pump. I will also be installing an aquarite SWG from hayward. I believe the power to the aquaririte would usually be attached to the load side of the pump breaker. If I understand the manual of the SWG correctly one could wire the SWG from its...

Should I buy a surge protector for my pool pump or equipment? I live in florida. lots of lightning. Any recommendations or thoughts would be appreciated. thanks.

I have seen repeatedly on this site that explosions can rarely occur with an electrolytic cell running without water flowing. Is this purely a bottled up pressure phenomenon or is this combustion? The cell doesn't evolve hydrogen by electrolysis at all does it? I don't think of Chlorine a...

I will be re-plumbing my pad soon and installing solar. I have a two story roof and live in florida where the solar may shut off during the day with water in the panels allowing the pipes to be exposed to high temps without circulation. I am concerned about vacuum leading to pipe collapse. The...

I cannot find any difference between the two other than color. It seems the 022056 intelliflo is being discontinued and replaced with the intelliproXF. Are they the same thing?

the hydraulic institute has a hundred page treatise on the DOE WEF machinations. there is a C curve included but there are no units. Did I miss an equation to describe the curve? Thanks.

Can I gang multiple actuators to a single relay? How many? I am re-plumbing my pad and am considering multiple valves to actuate when the solar activates. Probably just one additional. (the goal is to keep the circuit resistance low on both settings, (solar on and off)) Thanks folks.

Do I have this right? There is a single motor which runs forward with standard polarity and reverse with reverse polarity. When it reaches its desired terminus the mechanical switch interrupts the power on the lead turning the valve. At more or less the same time it closes the mechanical...

I know that both raise the pH. Spillover. This aerates the water creating a large surface area for gas exchange which facilitates the off-gassing of CO2 shifting the equilibrium of carbonate -carbonic acid - CO2 Causing the pH to rise and lowering TA.... right? SWG electrolytically...

Do blowers need a check valve and what type should I use? Related... this is theoretical but it has occurred to me that at low enough flow through the venturi spa jets, pressure at the air orifice could be positive. Can you get water back up to the blower at low water flow rates to the venturis?

I can think of a number of ways to calculate flow for pump speed modulation. 1) pressure sensor on each side of the pump gives TDH and pump speed plotted against the pump curve gives flow. 2)Power consumption plotted against pump speed allows calculation of TDH and by extension Flow. 3) Each...

First, This Site is the BOMB! very helpful and very well organized. I will be installing solar. (heliocol) This seems to me a good choice. (very low frictional loss). Once the flow is established the siphon effect reduces the hydrostatic pressure such that the pump can downshift but the pump...

I am new and this is my first post. I have however enjoyed and benefitted from many threads which I have already read. I have been regularly looking at this site over several months but have a question or two that remain. My pool is about 20yo but is in remarkably good shape. I have had brown...