Recent content by Bogo

  1. Bogo

    Scaling and Cloudy Water

    Is the hot tub new as well and it and pool having the cloudiness & sandpaper feel issues? Is it on steps only or other surfaces too? The PH, Alk and hardness looks to have been allowed to drift too high and probably for too long. Was a precise plaster start up procedure provided to you by PB or...
  2. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    I understand what you’re saying but not sure if correct. I read code as if the skimmer needs to handle 400 sq.ft. it’s based on its operating at 30GPM (or 3.75 per weir inch). This does raise the question if a skimmer is handling less than 400 sq.ft. then operating flow can be lowered...
  3. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    Here's code: Title: Section 6-1.29 - Swimming pool design standards | New York Codes, Rules and Regulations 9.5.2.3 Flow rate. Skimmers shall be designed for a flow-through rate of at least 30 gallons per minute or 3.75 gallons per minute per lineal inch of weir. The swimming pool...
  4. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    No, the required recirculation rate is determined by number of skimmers (30GPM per) and flow through the main drain (30% min. of the total flow) Recirculation Rate = RR = #skimmers x 30 + .3 x RR = 120/.7 = 172 GPM and RR must also supply the minimum turn over rate of 6 hours. Our issue may...
  5. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    Thanks everyone for your input. @proavia Main drain line is 4” Skimmers 3” branching down to 2”, 1.5” if old drawings are believable Returns 3” branching down to 2.5”, 2”, 1.5” “ Pumps = 3HP Pentair Intelliflo SVRS @mas985 The present configuration has one 30” filter w/own pump...
  6. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    Thanks for the replies. I was not sure as to how much detail I should go into this because it involves commercial pool codes (NY) and the forum is geared more towards residential users. I thought my inquiry could be replied to without getting over complicated. I did read the forum rules and it...
  7. Bogo

    Filters in Tandem/Parallel - Commercial Pool

    Hi, long time member/lurker with first post here. I’m looking for opinions/advice on running 2 identical filters (primarily sand) in tandem(parallel). Common arrangement I’ve seen are with valve provisions for backwashing only. I don’t know if additional plumbing and valves are used elsewhere...